PTO Manual of Classification for US patents

PTO Manual of Classification for US patents

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Class Number: 548
 Class Title: ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES

Subclass  Subclass
Number    Title

  *       ORGANIC COMPOUNDS (Class 532, Subclass 1)
         .HETEROCYCLIC CARBON COMPOUNDS CONTAINING A HETERO RING HAVING
            CHALCOGEN (i.e., O, S, Se, or Te) OR NITROGEN AS THE ONLY RING
            HETERO ATOMS (Class 260, Subclass 239R)
  100     ..Hetero ring is five-membered having two or more ring hetero
             atoms of which at least one is nitrogen (e.g., selenazoles,
             etc.)
  101     ...Heavy metal or aluminum containing
  102     ....Arsenic containing
  103     ....The metal is bonded directly to carbon, which carbon is a
               ring carbon of the five-membered hetero ring or which carbon
               is attached directly or indirectly to the five-membered
               hetero ring by nonionic bonding
  104     ....The metal is bonded directly to chalcogen of a -C(=X)X-
               group, wherein the X's are the same or diverse chalcogens,
               which group is attached directly or indirectly to the
               five-membered hetero ring by nonionic bonding
  105     ....The metal is bonded directly to chalcogen which chalcogen is
               attached directly to the five-membered hetero ring by
               nonionic bonding
  106     ....The metal is bonded directly to chalcogen which chalcogen is
               attached indirectly to the five-membered hetero ring by
               nonionic bonding
  107     ....The metal is in an anion and the five-membered hetero ring
               is in a cation
  108     ....Polycyclo ring system having the five-membered hetero ring
               as one of the cyclos
  109     ....Azide or acyclic nitrogen containing
  110     ...Boron or silicon containing
  111     ...Phosphorus attached directly to the five-membered hetero ring
              by nonionic bonding
  112     ...Phosphorus attached indirectly to the five-membered hetero
              ring by nonionic bonding
  113     ....Polycyclo ring system having the five-membered hetero ring
               as one of the cyclos
  114     .....The polycyclo ring system and phosphorus are both bonded
                directly to the same chalcogen
  115     ....The five-membered hetero ring and phosphorus are both bonded
               directly to the same nitrogen
  116     ....The five-membered hetero ring and phosphorus are both bonded
               directly to the same chalcogen
  117     .....The five-membered hetero ring contains chalcogen as a ring
                hetero atom
  118     .....The five-membered hetero ring contains at least three ring
                nitrogens
  119     ....The phosphorus is part of a substituent which is attached
               directly to ring carbon of the five-membered hetero ring
  120     ...The five-membered hetero ring contains ring selenium and is
              one of the cyclos in a polycyclo ring system
  121     ....Bicyclo ring system having the five-membered hetero ring as
               one of the cyclos
  122     ...The five-membered hetero ring consists of sulfur, oxygen,
              nitrogen, and carbon
  123     ...Plural ring sulfurs in the five-membered hetero ring
  124     ...Plural ring oxygens in the five-membered hetero ring
  125     ...The five-membered hetero ring consists of chalcogen, plural
              nitrogens, and carbon
  126     ....Polycyclo ring system having the five-membered hetero ring
               as one of the cyclos
  127     ....1,2,3-thiadiazoles (including hydrogenated)
  128     ....1,2,4-thiadiazoles (including hydrogenated)
  129     .....Chalcogen bonded directly to ring carbon of the thiadiazole
                ring
  130     ......Nitrogen or additional chalcogen bonded directly to ring
                 carbon of the thiadiazole ring
  131     ....1,2,4-oxadiazoles (including hydrogenated)
  132     .....Chalcogen bonded directly to ring carbon of the oxadiazole
                ring
  133     .....Nitrogen attached directly to the oxadiazole ring by
                nonionic bonding
  134     ....1,2,5-thiadiazoles (including hydrogenated)
  135     .....Chalcogen or nitrogen attached directly to ring carbon of
                the thiadiazole ring by nonionic bonding
  136     ....1,3,4-thiadiazoles (including hydrogenated)
  137     .....Diazole ring attached directly to the thiadiazole ring by
                nonionic bonding
  138     .....Nitrogen attached directly to the thiadiazole ring by
                nonionic bonding
  139     ......Having -C(=X)-, wherein X is chalcogen, attached directly
                 to the nitrogen by nonionic bonding
  140     .......Additional nitrogen attached directly to the -C(=X)-
                  group by nonionic bonding
  141     ......Chalcogen or additional nitrogen attached directly to ring
                 carbon of the thiadiazole ring by nonionic bonding
  142     .....Chalcogen bonded directly to the 2- and 5- positions of the
                thiadiazole ring
  143     ....1,3,4-oxadiazoles (including hydrogenated)
  144     .....Chalcogen bonded directly to ring carbon of the oxadiazole
                ring
  145     .....Plural carbocyclic rings bonded directly to the oxadiazole
                ring
  146     ...1,3-thiazoles (including hydrogenated)
  147     ....Spiro
  148     ....Polycyclo ring system having the thiazole ring as one of the
               cyclos
  149     .....Tetracyclo ring system having the thiazole ring as one of
                the cyclos
  150     .....Tricyclo ring system having the thiazole ring as one of the
                cyclos
  151     ......At least three ring hetero atoms in the tricyclo ring
                 system
  152     .....Bicyclo ring system having the thiazole ring as one of the
                cyclos
  153     ......At least three ring hetero atoms in the bicyclo ring
                 system
  154     .......Ring nitrogen is shared by the two cyclos
  155     ........Tetramisole per se or salt thereof (including
                   hydrogenated)
  156     ......Plural benzothiazoles (including hydrogenated)
  157     .......Chalcogen bonded directly to ring carbon of the thiazole
                  ring
  158     ........Plural benzothiazole ring systems bonded directly to
                   chain consisting of plural sulfurs
  159     ......Additional polycyclo heterocyclic ring system containing
  160     ......Polycyclo-carbocyclic ring system having at least three
                 cyclos
  161     ......Nitrogen attached directly to the thiazole ring by
                 nonionic bonding
  162     .......The nitrogen is a ring hetero atom
  163     .......Carbonyl or thiocarbonyl bonded directly to the nitrogen
  164     .......The nitrogen bonded additionally only to hydrogen
  165     ......Chalcogen bonded directly to ring carbon of the thiazole
                 ring
  166     .......Chalcogen bonded directly to the chalcogen
  167     .......Nitrogen attached directly to the chalcogen by nonionic
                  bonding
  168     ........The nitrogen is bonded additionally directly to two
                   carbons
  169     .......Chalcogen attached indirectly to the thiazole ring by
                  nonionic bonding
  170     ........The chalcogen, X, is in a -C(=X)- group
  171     .........Nitrogen bonded directly to the -C(=X)- group
  172     ........Nitrogen attached directly to chalcogen by nonionic
                   bonding
  173     .......Halogen attached directly or indirectly to the bicyclo
                  ring system by nonionic bonding
  174     .......Sulfur double bonded or thiol bonded directly to ring
                  carbon of the thiazole ring
  175     ........Process of forming the bicyclo ring system
  176     .........Aniline or alkyl derivative thereof utilized as
                    starting material
  177     ........Purification or recovery
  178     ......Chalcogen or nitrogen attached directly to the other cyclo
                 of the bicyclo ring system by nonionic bonding
  179     ......Chalcogen attached indirectly to the bicyclo ring system
                 by nonionic bonding
  180     .......The chalcogen, X, is in a -C(=X)- group
  181     ....Polycyclo heterocyclic ring system containing ring nitrogen
  182     ....Chalcogen bonded directly to ring carbon of the thiazole
               ring
  183     .....Plural chalcogens bonded directly to ring carbons of the
                thiazole ring
  184     .....Nitrogen attached directly to the thiazole ring by nonionic
                bonding
  185     ......Having -C(=X)-, wherein X is chalcogen, bonded directly to
                 nitrogen
  186     .....Chalcogen attached indirectly to the thiazole ring by
                nonionic bonding
  187     ......The chalcogen, X, is in a -C(=X)- group
  188     .......The -C(=X)- group is bonded directly to the thiazole
                  ring
  189     .....Nitrogen attached indirectly to the thiazole ring by
                nonionic bonding
  190     ....Nitrogen attached directly to the thiazole ring by nonionic
               bonding
  191     .....Plural nitrogens attached directly to the thiazole ring by
                nonionic bonding
  192     ......Nitrogen bonded directly to a -C(=X)- group, wherein X is
                 chalcogen
  193     .....Chalcogen attached indirectly to the thiazole ring by
                nonionic bonding
  194     ......The chalcogen, X, is in a -C(=X)- group
  195     .......The -C(=X)- group is bonded directly to the nitrogen
  196     ........Chalcogen or additional nitrogen bonded directly to the
                   -C(=X)- group
  197     ......Nitrogen bonded directly to chalcogen
  198     .....Nitrogen attached indirectly to the thiazole ring by
                nonionic bonding
  199     .....The nitrogen is bonded additionally only to hydrogen
  200     ....Having -C(=X)-, wherein X is chalcogen, bonded directly to
               the thiazole ring
  201     .....The -C(=X)- is part of a -C(=X)X- group, wherein the X's
                are the same or diverse chalcogens
  202     ....Plural double bonds between ring members of thiazole ring
  203     .....Chalcogen attached indirectly to the thiazole ring by
                nonionic bonding
  204     ......The chalcogen, X, is in a -C(=X)- group
  205     ......Nitrogen attached indirectly to the thiazole ring by
                 nonionic bonding
  206     ...1,2-thiazoles (including hydrogenated)
  207     ....Polycyclo ring system having the thiazole ring as one of the
               cyclos
  208     .....Ring carbon is shared by three of the cyclos of the
                polycyclo ring system
  209     .....Acyclic chalcogen bonded directly to ring carbon of the
                thiazole ring
  210     ......At least three chalcogens bonded directly to the thiazole
                 ring
  211     .......Saccharin per se or salt thereof
  212     .....Nitrogen attached directly to the thiazole ring by nonionic
                bonding
  213     ....Chalcogen bonded directly to ring carbon of the thiazole
               ring
  214     ....Nitrogen or chalcogen attached indirectly to the thiazole
               ring by nonionic bonding
  215     ...1,3-oxazoles (including hydrogenated)
  216     ....Spiro
  217     ....Polycyclo ring system having the oxazole ring as one of the
               cyclos
  218     .....At least three ring hetero atoms in the polycyclo ring
                system
  219     .....Plural polycyclo ring systems having the oxazole ring as
                one of the cyclos in each of the ring systems
  220     ......Plural oxazole-containing polycyclo ring systems each
                 bonded directly to the same polycyclo ring system or the
                 same hetero ring
  221     .....Chalcogen bonded directly at the 2-position of the oxazole
                ring
  222     .....Nitrogen bonded directly at the 2-position of the oxazole
                ring
  223     .....At least four rings in the polycyclo ring system
  224     .....Carbocyclic ring bonded directly at the 2-position of the
                oxazole ring
  225     ....Chalcogen bonded directly to ring carbon of the oxazole
               ring
  226     .....Plural chalcogens bonded directly to ring carbons of the
                oxazole ring
  227     ......Chalcogens bonded directly at 2- and 5-positions of the
                 oxazole ring
  228     .....Chalcogen bonded directly at 5-position of the oxazole
                ring
  229     .....Chalcogen bonded directly at 2-position of the oxazole
                ring
  230     ......Nitrogen, halogen, or -C(=X)-, wherein X is chalcogen,
                 attached directly to the oxazole ring by nonionic bonding
  231     ......3-position substituent contains ethylenic or acetylenic
                 unsaturation or nitrogen
  232     ......4- or 5-position substituent contains chalcogen
  233     ....Nitrogen bonded directly to ring carbon of the oxazole ring
  234     .....Additional ring attached directly to the nitrogen by
                nonionic bonding
  235     ....Plural double bonds between the ring members of the oxazole
               ring
  236     .....Cyano or -C(=X)-, wherein X is chalcogen, attached directly
                or indirectly to the oxazole ring by nonionic bonding
  237     ....One double bond between the ring members of the oxazole
               ring
  238     .....2-position substituent contains nitrogen, other than as
                nitro or nitroso
  239     .....2-position is unsubstituted or hydrocarbyl substituted
                only
  240     ...1,2-oxazoles (including hydrogenated)
  241     ....Polycyclo ring system having the oxazole ring as one of the
               cyclos
  242     .....At least three ring hetero atoms in the polycyclo ring
                system
  243     ....Chalcogen bonded directly to ring carbon of the oxazole
               ring
  244     .....Nitrogen bonded directly to ring carbon of the oxazole
                ring
  245     ....Nitrogen bonded directly to ring carbon of the oxazole ring
  246     .....Nitrogen bonded directly to the 3-position of the oxazole
                ring
  247     ....Plural double bonds between ring members of the oxazole
               ring
  248     .....Having -C(=X)-, wherein X is chalcogen, bonded directly to
                ring carbon of the oxazole ring by nonionic bonding
  249     .....4-position substituent contains plural chalcogens, attached
                indirectly to the oxazole ring by nonionic bonding, none of
                which is bonded directly to phenyl
  250     ...Tetrazoles (including hydrogenated)
  251     ....Chalcogen or nitrogen attached directly to the tetrazole
               ring by nonionic bonding
  252     ....Chalcogen attached indirectly to the tetrazole ring by
               nonionic bonding
  253     .....The chalcogen, X, is in a -C(=X)- group
  254     ....Nitrogen attached indirectly to the tetrazole ring by
               nonionic bonding
  255     ...1,2,3-triazoles (including hydrogenated)
  256     ....Polycyclo heterocyclic ring system containing ring oxygen
  257     ....Polycyclo ring system having the triazole ring as one of the
               cyclos
  258     .....Ring nitrogen is shared by two of the cyclos
  259     .....Chalcogen attached directly to the polycyclo ring system by
                nonionic bonding
  260     .....Chalcogen attached indirectly to the polycyclo ring system
                by nonionic bonding
  261     ......The chalcogen, X, is in a -C(=X)- group
  262.2   ...1,2,4-triazoles (including hydrogenated)
  262.4   ....Polycyclo ring system having the triazole ring as one
               of the cyclos
  262.6   ....Having -NH-C(=X)-NHH attached directly to the triazole
               ring by nonionic bonding (wherein X is chalcogen or =NH, and
               substitution may be made for hydrogen only)
  262.8   ....Plural nitrogens attached to the triazole ring
               indirectly by acyclic nonionic bonding, two of which are
               bonded directly to the same acyclic carbon
  263.2   ....Chalcogen bonded directly to ring carbon of the
               triazole ring
  263.4   .....Plural chalcogen bonded directly to ring carbons of
                the triazole ring
  263.6   ......The 1- and 2- positions of the triazole ring are
                 unsubstituted, or are alkyl or cycloalkyl substituted
                 only
  263.8   .....Halogen or nitrogen attached directly to the triazole
                ring by nonionic bonding
  264.2   .....Carbon bonded directly to the chalcogen
  264.4   ......Nitrogen or additional chalcogen attached indirectly
                 to the chalcogen by acyclic nonionic bonding
  264.6   .....Benzene ring bonded directly to the 4-position of the
                triazole ring
  264.8   ....Nitrogen attached directly to the triazole ring by
               nonionic bonding
  265.2   .....Plural nitrogens attached directly to the triazole
                ring by nonionic bonding
  265.4   .....Having -C(=X)-, wherein X is chalcogen, bonded
                directly to the nitrogen
  265.6   .....The nitrogen is further bonded to hydrogen only
  265.8   ....Benzene ring bonded directly to ring nitrogen of the
               triazole ring, and directly to the acyclic carbon of a
               benzoyl or benzyl group
  266.2   ....Additional unsaturated hetero ring attached directly or
               indirectly to the triazole ring by nonionic bonding
  266.4   .....The additional unsaturated hetero ring is one of the
                cyclos of a polycyclo ring system (except
                alkylenedioxyphenyl)
  266.6   .....The additional unsaturated hetero ring and the
                triazole ring are attached to the same acyclic atom or to
                the same acyclic chain
  266.8   ....Cyano or -C(=X)-, wherein X is chalcogen, bonded
               directly to the triazole ring
  267.2   ....Nitrogen attached indirectly to the triazole ring by
               acyclic nonionic bonding
  267.4   .....The nitrogen is double or triple bonded to carbon
  267.6   .....Having -C(=X)-, wherein X is chalcogen, bonded
                directly to the nitrogen
  267.8   ....Chalcogen attached indirectly to the triaole ring by
               acyclic nonionic bonding
  268.2   .....The triazole ring and the chalcogen are bonded
                directly to the same acyclic carbon
  268.4   .....Acyclic carbon bonded directly to triazole ring
                nitrogen is multiple bonded to an additional carbon
  268.6   .....Plural chalcogens attached indirectly to the triazole
                ring by acyclic nonionic bonding
  268.8   ....The triazole ring and a hetero ring whose ring members
               are carbon and chalcogen are bonded directly to the same
               acyclic carbon
  269.2   ....Processes for forming the triazole ring
  269.4   ....Benzene ring bonded directly to the triazole ring
  300.1   ...1,3-diazoles (including hydrogenated)
  300.4   ....Polycyclo ring system containing anthracene configured
               ring system having at least one double bond between ring
               members and having oxygen single bonded or any atom double
               bonded directly at the 9- or 10- positions (e.g., anthrone,
               anthraquinone, etc.)
  300.7   ....Spiro
  301.1   .....One of the two rings which form the spiro is part of a
                polycyclo ring system
  301.4   .....Acyclic chalcogen bonded directly at the 2- and at the
                4- or 5- positions of the 1,3-diazole ring [e.g.,
                cyclohexanespiro-5'-(3'-hydroxymethyl) hydantoin, etc.]
  301.7   ....Polycyclo ring system having the diazole ring as one
               the cyclos
  302.1   .....Tricyclo ring system having the diazole ring as one
                the cyclos
  302.4   ......The 1,3-diazole shares ring nitrogen with a
                 five-membered ring having no additional hetero atoms
                 (e.g., imidazo [2,1-a] isoindole, etc.)
  302.7   .....Bicyclo ring system having the diazole ring as one of
                the cyclos
  303.1   ......At least three ring hetero atoms in the bicyclo ring
                 system (e.g., furo- imidazole, (1,2-a) imidazole, pyrazo
                 (1,2-a) imidazolidine, etc.)
  303.4   .......Four ring nitrogens in the bicyclo ring system
                  (e.g., glycolurile, etc.)
  303.7   .......The other cyclo is a five-membered hetero ring
                  having one sulfur and four carbons (e.g.,
                  cis-tetrahydro-2-oxothieno [3,4-d]-imidazoline 4-valeric
                  acid or biotin, etc.)
  304.1   ........Having -C(=O)-HN-, wherein substitution may be made
                   for H, attached directly or indirectly to the bicyclo
                   ring system by acyclic nonionic bonding (e.g., biotin
                   amide, biotinylglycine, etc.)
  304.4   ......The other ring is a benzene ring
  304.7   .......Additional hetero ring attached directly or
                  indirectly to the diazole ring by nonionic bonding (e.g.,
                  methyl( 5-[2-(2-thienyl)-1,3-dioxolan
                  -2-yl]-1H-benzimidazol-2-yl) carbamate, etc.)
  305.1   ........The additional hetero ring is a cyclo in a
                   polycyclo ring system (e.g., benzofuranyl-benzimidazole,
                   etc.)
  305.4   .........The additional polycyclo ring system contains a
                    1,3-diazole [e.g., bis (benzimidazol-2-yl) stilene,
                    etc.]
  305.7   ..........The polycyclo ring systems are bonded to the same
                     acyclic carbon atom or to the same acyclic carbon
                     chain (e.g., di-[2-benzimidazolyl)-methane;
                     di-[benzimidazyl-(2)]-monohydroxyethylene, etc.)
  306.1   ........The additional hetero ring contains nitrogen as the
                   only ring hetero atom [e.g.,
                   2-(2'-imidazolin-2'-yl)-benzimidazole;
                   1-p-chlorophenyl-3- pyrrolidin-1'- yl-propyl
                   benzimidazolone, etc.]
  306.4   .......Chalcogen bonded directly to ring carbon of the
                  diazole ring
  306.7   ........Plural chalcogens attached directly to the diazole
                   ring by nonionic bonding
  307.1   ........The chalcogen is sulfur
  307.4   .......Nitrogen attached directly to the diazole ring by
                  nonionic bonding
  307.7   ........Chalcogen attached directly to diazole ring
                   nitrogen by nonionic bonding
  308.1   ........Having -C(=X)-, wherein X is chalcogen, bonded
                   directly to the diazole ring
  308.4   .........Acyclic nitrogen bonded directly to the -C(=X)-
                    group
  308.7   ........Having -C(=X)-X-, wherein the X's are the same or
                   diverse chalcogens, attached indirectly to the diazole
                   ring by acyclic nonionic bonding
  309.1   .........Chalcogen bonded directly to the benzene ring of
                    the bicyclo ring system
  309.4   .......Having -C(=X)-, wherein X is chalcogen, bonded
                  directly to the diazole ring
  309.7   .......Nitrogen attached indirectly to the diazole ring by
                  acyclic nonionic bonding
  310.1   .......Chalcogen attached indirectly to the diazole ring by
                  acyclic nonionic bonding
  310.4   .......Halogen attached directly or indirectly to the
                  diazole ring by acyclic nonionic bonding
  310.7   .......Benzene ring bonded directly at the 2- position of
                  the diazole ring
  311.1   ....Additional hetero ring attached directly or indirectly
               to the diazole ring by nonionic bonding (e.g.,
               1,3-dioxolan-2-yl methyl-imidazole, etc.)
  311.4   .....The additional hetero ring is a cyclo in a polycyclo
                ring system [e.g., 2-(1-isothiochromanyl)-2-imidazoline
                hydrochloride, etc.]
  311.7   ......At least two ring hetero atoms in the polycyclo ring
                 system
  312.1   ......The additional polycyclo ring system is a bicyclo
                 ring system having nitrogen as the only ring hetero atom
                 [e.g., 5-(indolyl-3-methylene)- hydantoin, etc.]
  312.4   .....The additional hetero ring is a diazole ring
                (including hydrogenated)
  312.7   ......Plural 1,3-diazoles
  313.1   .......Additional diverse hetero ring attached directly or
                  indirectly to a diazole ring by nonionic bonding
  313.4   .......The diazole rings are bonded directly to each other
  313.7   .......Ring nitrogens of two diazole rings attached
                  directly to the same atom or chain, which chain may
                  include a ring, by nonionic bonding
  314.1   ........Acyclic chalcogen bonded directly at the 2- and at
                   the 4- or 5- positions of each of the two diazole rings
                   (e.g., N, N' methylene bis -hydantoin, etc.)
  314.4   .......Two diazole rings are bonded directly to the same
                  carbon atom or carbon chain, which chain may include a
                  ring
  314.7   .....The additional hetero ring contains nitrogen as the
                only ring hetero atom [e.g.,
                N-(cyclopentylcarbonyl-L-histidyl)-pyrrolidine, etc.]
  315.1   .....The additional hetero ring contains sulfur as the only
                ring hetero atom [e.g., 5-(2-thienyl) hydantoin, etc.]
  315.4   .....The additional hetero ring is a five-membered ring
                having oxygen and four carbons (e.g., pilocarpine;
                2-[5-(3,4-dimethoxyphenyl)-2-furyl]imidazole hydrochloride,
                etc.)
  315.7   ......Acyclic chalcogen bonded directly to ring carbon of
                 the 1,3-diazole ring
  316.1   .......Plural acyclic chalcogens bonded directly at the 2-
                  and at the 4- or 5- positions of the 1,3-diazole ring
                  [e.g., N-(5-nitro-2-furfuryliden)-1- amino-hydantoin,
                  etc.]
  316.4   ....Chalcogen bonded directly to ring carbon of the diazole
               ring (e.g., N-vinyl-N, N'ethylene urea, etc.)
  316.7   .....Additional chalcogen attached directly to ring
                nitrogen of the diazole ring by nonionic bonding
  317.1   .....Plural chalcogens bonded directly to ring carbons of
                the diazole ring
  317.5   ......Three chalcogens bonded directly to ring carbons of
                 the diazole ring
  318.1   ......Nitrogen attached directly to the diazole ring by
                 nonionic bonding [e.g., (2,5-dioxo-4-imidazolidinyl)urea
                 or allantoin, etc.]
  318.5   ......Having -C(=X)-, wherein X is chalcogen, bonded
                 directly to the diazole ring
  319.1   ......Chalcogen attached indirectly to the diazole ring by
                 acyclic nonionic bonding
  319.5   .......The chalcogen, X, is in a -C(=X)- group
  320.1   ......Nitrogen attached indirectly to the diazole ring by
                 acyclic nonionic bonding
  320.5   ......Halogen attached directly or indirectly to the
                 diazole ring by acyclic nonionic bonding
  321.1   ......Benzene ring bonded directly to the diazole ring
  321.5   .....Nitrogen attached directly to the diazole ring by
                nonionic bonding
  322.1   ......The nitrogen is attached directly to ring nitrogen of
                 the diazole ring by nonionic bonding (e.g.,
                 dinitroethylene urea, etc.)
  322.5   .....Having -C(=X)-, wherein X is chalcogen, bonded
                directly to the diazole ring
  323.1   ......Acyclic nitrogen bonded directly to the -C(=X)-
                 group
  323.5   .....Chalcogen attached indirectly to the diazole ring by
                acyclic nonionic bonding
  324.1   ......The chalcogen, X, is in a -C(=X)- group
  324.5   .....Nitrogen attached indirectly to the diazole ring by
                acyclic nonionic bonding
  325.1   .....The chalcogen is sulfur or selenium (e.g.,
                2-mercaptoimidazoline, ethylenethiourea, etc.)
  325.5   .....Benzene ring bonded directly to the diazole ring
  326.1   .....The diazole ring is further unsubstituted (e.g.,
                cyclic ethylene urea, etc.)
  326.5   ....Nitrogen attached directly to the diazole ring by
               nonionic bonding
  327.1   .....The nitrogen is part of a nitro group (i.e., -NO ),
                (e.g., 5-nitroimidazole, etc.)
  327.5   ......The nitro group is bonded directly at the 2-position
                 of the diazole ring
  328.1   ......Having -C(=X)-, wherein X is chalcogen, bonded
                 directly to the diazole ring
  328.5   ......Nitrogen attached indirectly to the diazole ring by
                 acyclic nonionic bonding
  329.1   .......The nitrogen is multiply bonded to carbon
  329.5   ......Benzene ring bonded directly at the 2-position of the
                 diazole ring
  330.1   ......Chalcogen, not part of a nitro group, attached
                 indirectly to the diazole ring by acyclic nonionic
                 bonding
  330.5   .......The chalcogen is sulfur
  331.1   .....Chalcogen or the nitrogen attached directly to diazole
                ring nitrogen by nonionic bonding
  331.5   .....The nitrogen is bonded directly at the 2-position of
                the diazole ring
  332.1   ......Having -C(=X)-, wherein X is chalcogen, bonded
                 directly to the diazole ring
  332.5   ......Chalcogen, additional nitrogen, or -C(=X)-, wherein X
                 is chalcogen or nitrogen, attached directly to the
                 nitrogen by nonionic bonding
  333.1   ......Benzene ring bonded directly to the nitrogen
  333.5   ....Having -C(=X)-, wherein X is chalcogen, bonded directly
               to the diazole ring
  334.1   .....The -C(=X)- is bonded directly to ring nitrogen of the
                diazole ring
  334.5   .....The -C(=X)- is part of a -C(=X)X- group, wherein the
                X's are the same or diverse chalcogens (e.g., imidazole-
                4,5-dicarboxylic acid, etc.)
  335.1   ....Two double bonds between ring members of the diazole
               ring (i.e., imidazole)
  335.5   .....Nitrogen attached indirectly to the diazole ring by
                acyclic nonionic bonding
  336.1   ......The nitrogen is multiply bonded to carbon
  336.5   .......Having a -C=N group bonded directly to the nitrogen
                  (e.g., N-cyano-N'-

                  methyl-N~-{2-(4-methyl-5-imidazolyl)-methylthio]-ethyl}g
                  nidine, etc.)
  337.1   .......The nitrogen is part of a -C=N group which is bonded
                  directly to the diazole ring (e.g., 4,5-dicyanoimidazole,
                  etc.)
  338.1   ......Having -C(=X)-, wherein X is chalcogen, bonded
                 directly to the nitrogen
  338.5   .......The chalcogen is sulfur or sulfur attached
                  indirectly to the -C(=X)- group by acyclic nonionic
                  bonding
  339.1   ......The nitrogen and -C(=X)X-, wherein X's are the same
                 or diverse chalcogens, are bonded directly to the same
                 acyclic carbon atom (e.g., -amino-4(5)- imidazole
                 propionic acid or histidine, etc.)
  339.5   .......Halogen attached indirectly to the diazole ring by
                  acyclic nonionic bonding
  340.1   ......Chalcogen attached indirectly to the nitrogen by
                 acyclic nonionic bonding
  341.1   .....Chalcogen attached indirectly to the diazole ring by
                acyclic nonionic bonding
  341.5   ......The chalcogen, X, is in a -C(=X)- group
  342.1   ......The chalcogen is sulfur
  342.5   ......Benzene ring or halogen attached directly to the
                 diazole ring by nonionic bonding (e.g.,
                 1-hydroxyethyl-4,5-diphenyl-imidazole; 1-ethyloxymethyl-2,
                 4,5-trichloro-imidazole, etc.)
  343.1   .....Halogen attached directly or indirectly to the diazole
                ring by acyclic nonionic bonding
  343.5   .....Benzene ring bonded directly to the diazole ring
  344.1   .....The diazole ring and two benzene rings are bonded
                directly to the same acyclic carbon
  345.1   .....Cycloaliphatic ring bonded directly to the diazole
                ring
  346.1   .....Benzene ring attached indirectly to the diazole ring
                by acyclic nonionic bonding
  347.1   ....One double bond between ring members of the diazole
               ring (i.e., imidazoline)
  348.1   .....Nitrogen attached indirectly to the diazole ring by
                acyclic nonionic bonding
  349.1   ......Chalcogen attached indirectly to the diazole ring by
                 acyclic nonionic bonding
  350.1   .....Chalcogen attached indirectly to the diazole ring by
                acyclic nonionic bonding (e.g., hydroxyalkyl glyoxalidine,
                etc.)
  351.1   ......The chalcogen is sulfur
  352.1   ......The chalcogen, X, is in a -C(=X)X- group, wherein X's
                 are the same or diverse chalcogens
  353.1   ......Benzene ring bonded directly to the chalcogen [e.g.,
                 2-(3- aminophenoxymethyl)imidazoline, etc.]
  354.1   .....Benzene ring bonded directly to the diazole ring
  355.1   .....Benzene ring and the diazole ring are bonded to the
                same acyclic carbon atom or carbon chain
  356.1   ...1,2-diazoles (including hydrogenated)
  356.5   ....Polycyclo ring system containing anthracene configured
               ring system having at least one double bond between ring
               members and having oxygen single bonded or any atom double
               bonded directly at the 9- or 10- positions (e.g., anthrone,
               anthraquinone, etc.)
  357.1   .....Additional polycyclo ring system having at least three
                cyclos attached directly or indirectly to the anthrone or
                anthraquinone by nonionic bonding
  357.5   ....Spiro
  358.1   ....Polycyclo ring system having the diazole ring as one of
               the cyclos
  358.5   .....Tetracyclo ring system having the diazole ring as one
                of the cyclos
  359.1   .....Tricyclo ring system having the diazole ring as one of
                the cyclos
  359.5   ......At least three ring hetero atoms in the tricyclo ring
                 system
  360.1   .....Bicyclo ring system having the diazole ring as one of
                the cyclos (e.g., 2,
                4-dichloro-5-nitrophenyl-4,5,6,7-tetrahydro-2H-indazole,
                etc.)
  360.5   ......At least three ring hetero atoms in the bicyclo ring
                 system
  361.1   ......The other ring is a benzene ring
  361.5   .......Chalcogen bonded directly to ring carbon of the
                  diazole ring
  362.1   .......Nitrogen attached directly to the diazole ring by
                  nonionic bonding
  362.5   .......Having chalcogen or nitrogen attached indirectly to
                  the diazole ring by acyclic nonionic bonding
  363.1   ......Chalcogen bonded directly to ring carbon of the
                 diazole ring
  364.1   ....Additional hetero ring attached directly or indirectly
               to the diazole ring by nonionic bonding
  364.4   .....The additional hetero ring is a cyclo in a polycyclo
                ring system
  364.7   ......The polycyclo ring system contains nitrogen as the
                 only ring hetero atom
  365.1   .....Plural 1,2-diazoles (including hydrogenated)
  365.4   ......Two diazole rings are bonded directly to each other,
                 to the same acyclic carbon atom or to the same acyclic
                 carbon chain
  365.7   .....The additional hetero ring contains chalcogen as the
                only ring hetero atom
  366.1   ....Chalcogen bonded directly to ring carbon of the diazole
               ring
  366.4   .....Plural chalcogens bonded directly to diazole ring
                carbons
  366.7   ......Nitrogen attached indirectly to the diazole ring by
                 acyclic nonionic bonding
  367.1   ......Chalcogen attached indirectly to the diazole ring by
                 acyclic nonionic bonding
  367.4   .....Nitrogen attached directly to the diazole ring by
                nonionic bonding
  367.7   ......The nitrogen is multiply bonded to acyclic carbon or
                 is bonded to nitrogen of the diazole ring
  368.1   ......Chalcogen attached directly to the nitrogen by
                 nonionic bonding [e.g., 5-
                 (2-carbethoxyphenoxy)-1,3-dimethyl-4-nitropyrazole, etc.]
  368.4   ......Having -C(=X)-, wherein X is chalcogen, bonded
                 directly to the nitrogen
  368.7   ......The nitrogen and the chalcogen are directly bonded to
                 non-adjacent carbons of the diazole ring (e.g., pyrazolone
                 imide or imino pyrazolone, etc.)
  369.1   ......Chalcogen attached indirectly to the nitrogen by
                 acyclic nonionic bonding
  369.4   .....Having -C(=X)-, wherein X is chalcogen bonded directly
                to the diazole ring
  369.7   ......Acyclic nitrogen or chalcogen bonded directly to the
                 -C(=X)- group
  370.1   .....Nitrogen attached indirectly to the diazole ring by
                acyclic nonionic bonding
  370.4   .....Chalcogen attached indirectly to the diazole ring by
                acyclic nonionic bonding
  370.7   .....The chalcogen is bonded directly at the 4-position of
                the diazole ring
  371.1   .....Benzene ring is bonded directly to ring nitrogen of
                the diazole ring (e.g., 1-phenyl-3-methyl-5-pyrazolone;
                antipyrine, etc.)
  371.4   ....Nitrogen attached directly to the diazole ring by
               nonionic bonding
  371.7   .....Nitrogen attached indirectly to the diazole ring by
                acyclic nonionic bonding
  372.1   .....Chalcogen attached directly to the nitrogen by
                nonionic bonding [e.g., N-(2-hydroxyethyl)-4-nitropyrazole,
                etc.]
  372.5   .....Chalcogen attached indirectly to the diazole ring by
                acyclic nonionic bonding [e.g.,
                1-(2-hydroxyethyl)-3-amino-4(para-chlorophenyl)-pyrazole,
                etc.]
  373.1   ....Two double bonds between ring members of the diazole
               ring (i.e., pyrazole)
  374.1   .....Having -C(=X)-, wherein X is chalcogen bonded directly
                to the diazole ring
  375.1   .....Nitrogen attached indirectly to the diazole ring by
                acyclic nonionic bonding
  376.1   .....Chalcogen attached indirectly to the diazole ring by
                acyclic nonionic bonding
  377.1   .....Benzene ring bonded directly to the diazole ring
  379.1   ....One double bond between ring memebers of the diazole
               ring (i.e., pyrazoline)
  379.4   .....Chalcogen or nitrogen attached indirectly to the
                diazole ring by acyclic nonionic bonding
  379.7   .....Plural benzene rings bonded directly to the diazole
                ring
  400     ..Hetero ring is five-membered consisting of one nitrogen and
             four carbons (e.g., halopyrrolidines, etc.)
  401     ...With preservative or stabilizer
  402     ...Heavy metal or aluminum containing
  403     ....The metal is bonded directly to chalcogen, which chalcogen
               is attached directly or indirectly to the five-membered
               hetero ring by nonionic bonding pyrazole ring carbon
  404     ....Plural chalcogens bonded directly to ring carbons of the
               five-membered hetero ring (e.g., cyclic imides, etc.)
  405     ...Boron containing
  406     ...Silicon containing
  407     ...Spiro
  408     ....The spiro includes the five-membered hetero ring
  409     .....Both rings which form the spiro are hetero rings
  410     ......Acyclic chalcogen attached directly to the five-membered
                 nitrogen containing spiro hetero ring by nonionic bonding
  411     .....Polycyclo ring system having one of the two rings which
                form the spiro as one of the cyclos
  412     ...Phosphorus attached directly to the five-membered hetero ring
              by nonionic bonding
  413     ...Phosphorus attached indirectly to the five-membered hetero
              ring by nonionic bonding
  414     ....Polycyclo ring system having the five-membered hetero ring
               as one of the cyclos
  415     .....Plural chalcogens bonded directly to ring carbons of the
                five-membered hetero ring
  416     ...Polycyclo ring system having the five-membered hetero ring as
              one of the cyclos
  417     ....The polycyclo ring system has at least six cyclos, and has
               either a ring carbon that is shared by three of the cyclos
               or has a ring chalcogen
  418     ....Pentacyclo ring system having the five-membered hetero ring
               as one of the cyclos
  419     .....Two of the cyclos share at least three ring members, or a
                ring carbon is shared by three of the cyclos (e.g.,
                bridged, peri-fused, etc.)
  420     ....Tetracyclo ring system having the five-membered hetero ring
               as one of the cyclos
  421     .....Plural ring hetero atoms in the tetracyclo ring system
  422     ......Three-membered nitrogen containing hetero ring is cyclo in
                 the tetracyclo ring system (e.g., mitomycin C, etc.)
  423     ......Plural chalcogens bonded directly to ring carbons of the
                 five-membered hetero ring (e.g., cyclic imides, etc.)
  424     .....Two of the cyclos share at least three ring members, or a
                ring carbon is shared by three of the cyclos (e.g.,
                bridged, peri-fused, etc.)
  425     ......Benzene ring is cyclo in the tetracyclo ring system
  426     .....The five-membered hetero ring shares ring members with one
                other cyclo only
  427     ....Tricyclo ring system having the five-membered hetero ring as
               one of the cyclos
  428     .....Ring nitrogen is shared by two of the cyclos
  429     .....Plural ring hetero atoms in the tricyclo ring system
  430     ......Ring chalcogen in the tricyclo ring system
  431     .......Chalcogen bonded directly to ring carbon of the
                  five-membered hetero ring (e.g., cyclic imides, etc.)
  432     .......Pyrano(3,4-b)indoles or thiopyrano(3,4-b) indoles
                  (including hydrogenated)
  433     ......The tricyclo ring system consists of a benzene ring which
                 shares ring carbons with two nitrogen containing hetero
                 rings (e.g., pyromellitic diimide, etc.)
  434     .....Two of the cyclos share at least three ring members (i.e.,
                bridged)
  435     ......Plural chalcogens bonded directly to ring carbons of the
                 five-membered hetero ring (e.g., cyclic imides, etc.)
  436     .....A ring carbon is shared by three of the cyclos (e.g.,
                peri-fused, etc.)
  437     ......Chalcogen bonded directly to ring carbon of the
                 five-membered hetero ring (e.g., naphthostyril, etc.)
  438     ......Benzene ring, which is not a cyclo in the tricyclo ring
                 system, bonded directly to ring carbon of the
                 five-membered hetero ring
  439     .....The five-membered hetero ring shares ring carbons with two
                carbocyclic rings (e.g., tetrahydrocarbazoles, etc.)
  440     ......The five-membered hetero ring shares ring carbons with two
                 benzene rings (i.e., carbazoles)
  441     .......Having -C(=X)-, wherein X is chalcogen, bonded directly
                  to the tricyclo ring system (e.g., carbazole-3-carboxylic
                  acid, etc.)
  442     .......One of the benzene rings and an additional carbocyclic
                  ring bonded directly to the same acyclic nitrogen
  443     .......Azido or sulfonyl attached directly to the tricyclo ring
                  system by nonionic bonding (e.g., carbazole sulfonic
                  acid, etc.)
  444     .......Chalcogen or nitrogen attached indirectly to the tricyclo
                  ring system by acyclic nonionic bonding
  445     .......The tricyclo ring system is unsubstituted or is
                  hydrocarbyl substituted only (e.g., N-vinyl carbazole,
                  etc.)
  446     ........Carbazole per se or alkyl substituted only
  447     .........Processes of forming by cyclization or alkylation
  448     ......Having -C(=X)-, wherein X is chalcogen, bonded directly to
                 ring carbon of the tricyclo ring system (e.g., 1, 2, 3,
                 4-tetrahydrocarbazole -3 carboxylic acid, etc.)
  449     ......Chalcogen or nitrogen attached indirectly to ring nitrogen
                 of the five membered hetero ring by acyclic nonionic
                 bonding
  450     .....Chalcogen bonded directly to ring carbon of the
                five-membered hetero ring (e.g., indigoid dyes, etc.)
  451     ......Plural chalcogens bonded directly to ring carbons of the
                 five-membered hetero ring (e.g., cyclic imides,
                 naphthisatins, etc.)
  452     ....Bicyclo ring system having the five-membered hetero ring as
               one of the cyclos (e.g., octahydroindoles, etc.)
  453     .....Plural ring hetero atoms in the bicyclo ring system, or
                ring nitrogen is shared by the two cyclos of the bicyclo
                ring system
  454     .....Additional polycyclo heterocyclic ring system attached
                directly or indirectly to the bicyclo ring system by
                nonionic bonding
  455     ......The additional polycyclo ring system includes a
                 five-membered nitrogen containing hetero ring
  456     .......Lactone ring containing (e.g., 3,3-bisindolyl phthalides,
                  etc.)
  457     .......Ring carbon of one of the five-membered hetero rings is
                  bonded directly to ring carbon of the other (e.g., indigo
                  dyes, etc.)
  458     ........By a single bond (e.g., leuco indigo, etc.)
  459     ........Halogen attached directly or indirectly to the bicyclo
                   ring system by nonionic bonding (e.g., dibromoindigo,
                   etc.)
  460     .......Ring carbon of each of the two five-membered hetero rings
                  is bonded directly to chalcogen or nitrogen (e.g., both
                  rings may be bonded to the same nitrogen atom or to
                  different nitrogen atoms, etc.)
  461     ........Plural chalcogens bonded directly to ring carbons of
                   each of the two five membered hetero rings (e.g.,
                   bisphthalimides, etc.)
  462     .........The ring nitrogen of each of the two five-membered
                    hetero rings is bonded directly to the same atom or
                    chain, which chain may include a ring (e.g.,
                    N,N'-ethylene-bisphthalimide, etc.)
  463     ......The additional polycyclo heterocyclic ring system has a
                 lactone ring as one of the cyclos
  464     ......Ring carbon of the five-membered hetero ring is bonded
                 directly to a ring carbon of the hetero ring which is a
                 cyclo in the additional polycyclo heterocyclic ring system
                 (e.g., indigoid dyes, etc.)
  465     .....Additional hetero ring, attached directly or indirectly to
                the bicyclo ring system by nonionic bonding
  466     ......The additional hetero ring is bonded directly to a ring
                 carbon of the bicyclo ring system
  467     ......Substituent on ring carbon of the bicyclo ring system
                 contains the additional hetero ring
  468     .......The additional hetero ring and the bicyclo ring system
                  are attached directly to the same acyclic carbon or
                  acyclic carbon chain
  469     .....The bicyclo ring system consists of the five-membered
                hetero ring and a benzene ring (e.g., indole, etc.)
  470     ......The ring nitrogen is bonded directly to two ring carbons
                 of the same cyclo which carbons are members of one cyclo
                 only (i.e., isoindoles or isoindolenines)
  471     .......Nitrogen bonded directly to ring carbon of the
                  five-membered hetero ring
  472     .......Chalcogen bonded directly to ring carbon of the
                  five-membered hetero ring (e.g., phthalimidines, etc.)
  473     ........Plural chalcogens bonded directly to ring carbons of the
                   five-membered hetero ring (e.g., phthalimides, etc.)
  474     .........Polycyclo carbocyclic ring system having at least three
                    cyclos
  475     .........Chalcogen or nitrogen attached directly to the ring
                    nitrogen of the five membered hetero ring by nonionic
                    bonding
  476     .........Benzene ring bonded directly to the ring nitrogen of
                    the five-membered hetero
  477     .........Nitrogen attached indirectly to the ring nitrogen of
                    the five-membered hetero ring by acyclic nonionic
                    bonding
  478     .........Chalcogen attached indirectly to the ring nitrogen of
                    the five-membered hetero ring by acyclic nonionic
                    bonding
  479     ..........The chalcogen, X, is in a -C(=X)- group (e.g., beta -
                     phthalimidopropionaldehyde, etc.)
  480     .........The ring nitrogen of the five-membered hetero ring is
                    unsubstituted or hydrocarbyl substituted only
  481     ..........Chalcogen or nitrogen attached indirectly to ring
                     carbon of the bicyclo ring system by acyclic nonionic
                     bonding
  482     .......The five-membered hetero ring contains one double bond
                  only (i.e., isoindolines)
  483     ......Nitrogen attached directly to the five-membered hetero
                 ring by nonionic bonding (e.g., 2-amino indoles, etc.)
  484     ......Chalcogen bonded directly to ring carbon of the
                 five-membered hetero ring (e.g., 3-indolols, etc.)
  485     .......Plural chalcogens bonded directly to ring carbons of the
                  five-membered hetero ring (e.g., isatins, etc.)
  486     .......The chalcogen is bonded directly to a ring carbon of the
                  five-membered hetero ring which is adjacent to the ring
                  nitrogen (e.g., 2-indolinones, etc.)
  487     ........Two benzene rings bonded directly to the same ring
                   carbon of the five membered hetero ring
  488     .......Polycyclo carbocyclic ring system bonded direcly to a
                  ring carbon of the five-membered hetero ring (e.g.,
                  indol-alpha-naphtholindigo, etc.)
  489     .......Process of forming the bicyclo ring system directly from
                  reactant which contains acyclic nitrogen bonded directly
                  to a benzene ring (e.g., indoxyl from phenylglycine,
                  etc.)
  490     ......The five-membered hetero ring contains one double bond
                 only (i.e., indolines)
  491     .......Chalcogen or nitrogen attached indirectly to the
                  five-membered hetero ring by acyclic nonionic bonding
  492     ......Having -C(=X)-, wherein X is chalcogen, bonded directly to
                 ring carbon of the five-membered hetero ring (e.g.,
                 indole-2-carboxylic acids, etc.)
  493     .......Hydrogen or additional carbon bonded directly to the
                  -C(=X)- group (e.g., aldehydes,ketones, etc.)
  494     ......Having -C(=X)-, wherein X is chalcogen, attached
                 indirectly to ring carbon of the five-membered hetero ring
                 by an acyclic carbon or acyclic carbon chain (e.g.,
                 indole-3-acetic acid, etc.)
  495     .......Acyclic nitrogen bonded directly to the acyclic carbon or
                  acyclic carbon chain
  496     ........The acyclic carbon or acyclic carbon chain is further
                   unsubstituted or alkyl substituted only (e.g.,
                   tryptophane, etc.)
  497     .........Processes
  498     ..........Racemization or optical resolution
  499     ..........Preparing from hydantoins or proteins
  500     .......Having -C(=X)-, wherein X is chalcogen, bonded directly
                  to ring nitrogen of the five-membered hetero ring (e.g.,
                  indomethacin, etc.)
  501     ........Processes
  502     .......Processes
  503     ......Nitrogen attached indirectly to ring carbon of the bicyclo
                 ring system by acyclic nonionic bonding
  504     .......Nitrogen attached indirectly to ring carbon of the
                  five-membered hetero ring by acyclic nonionic bonding
                  (e.g., tryptamine, etc.)
  505     ........The nitrogen is double or triple bonded directly to
                   carbon
  506     ........Benzene ring bonded directly or attached indirectly by
                   an acyclic carbon or an acyclic carbon chain to ring
                   carbon of the five-membered hetero ring
  507     ........Chalcogen or additional nitrogen attached indirectly to
                   ring carbon of the five-membered hetero ring by acyclic
                   nonionic bonding
  508     ......Processes of forming the bicyclo ring system by
                 cyclization (e.g., forming indole from o-ethyl aniline,
                 etc.)
  509     ......Chalcogen attached indirectly to the bicyclo ring system
                 by acyclic nonionic bonding
  510     .......The chalcogen, X, is in a -C(=X)- group
  511     ......Benzene ring bonded directly or attached indirectly by an
                 acyclic carbon or an acyclic carbon chain to ring carbon
                 of the five-membered hetero ring
  512     .....Chalcogen bonded directly to ring carbon of the
                five-membered hetero ring (e.g., adrenochrome, etc.)
  513     ......Plural chalcogens bonded directly to ring carbons of the
                 five-membered hetero ring (e.g., imides, etc.)
  514     .......Chalcogen or nitrogen attached directly to ring nitrogen
                  of the five membered hetero ring by nonionic bonding
  515     .....The ring nitrogen is bonded directly to two ring carbons of
                the same cyclo which carbons are members of one cyclo only
                (e.g., cyclopenta(c)pyrroles, etc.)
  516     .....Two double bonds between ring members of the five-membered
                hetero ring (e.g., 4,5,6,7-tetrahydroindoles, etc.)
  517     ...Additional hetero ring, which is attached directly or
              indirectly to the five-membered hetero ring by nonionic
              bonding
  518     ....The additional hetero ring also contains nitrogen
  519     .....Ring carbon of each of the two nitrogen containing hetero
                rings is bonded directly to chalcogen (e.g., both rings may
                be bonded to the same oxygen atom or to different oxygen
                atoms, etc.)
  520     ......Plural chalcogens bonded directly to ring carbons of each
                 of the two nitrogen containing hetero rings (e.g.,
                 bis-succinimides, etc.)
  521     .......Double bond between ring carbons in each of the two
                  nitrogen containing hetero rings (e.g., bis-maleimides,
                  etc.)
  522     ........Processes
  523     .....Ring nitrogens of the two nitrogen containing hetero rings
                are bonded directly to the same atom or chain, which chain
                may include a ring
  524     ......The atom is carbon or the chain consists of carbons
  525     ....Polycyclo ring system which includes ring chalcogen
  526     .....Plural ring chalcogens in the polycyclo ring sytem (e.g.,
                methylenedioxyphenyl containing, etc.)
  527     ....Sulfur containing hetero ring
  528     ...Polycyclo carbocyclic ring system having at least three
              cyclos
  529     ....Attached directly to the five-membered hetero ring
  530     ...Having -C(=X)-, wherein X is chalcogen, bonded directly to
              the five membered hetero ring (e.g., pyrrole carbonyl
              halides, pyrrole carboxaldehyde, etc.)
  531     ....The -C(=X)- is part of a -C(=X)X- group, wherein the X's are
               the same or diverse chalcogens (e.g., pyrrole-3-carboxylic
               acid, etc.)
  532     .....And is bonded directly to a ring carbon which is adjacent
                to the ring nitrogen of the five-membered hetero ring
                (e.g., 4-hydroxy proline, etc.)
  533     ......Additional -C(=X) bonded directly to the five-membered
                 hetero ring (e.g., N n-butyryl-L-proline, etc.)
  534     ......Chalcogen bonded directly to the other ring carbon which
                 is adjacent to the ring nitrogen of the five-membered
                 hetero ring (e.g., 2-pyrrolidone-5 carboxylic acid, etc.)
  535     ......The five-membered hetero ring is further unsubstituted or
                 alkyl substituted only (e.g., proline, etc.)
  536     .....Additional -C(=X)- bonded directly to the five-membered
                hetero ring (e.g., pyrrole-3,4-dicarboxylic acid esters,
                etc.)
  537     ....Acyclic nitrogen bonded directly to the -C(=X)- (e.g.,
               4,5-dihalopyrrole -2 carboxamides, etc.)
  538     .....The -C(=X)- is bonded directly to the ring nitrogen of the
                five-membered hetero ring (e.g., 1-pyrrolidine
                carboxanilides, etc.)
  539     ....Carbocyclic ring bonded directly to the -C(=X)- (e.g.,
               3-benzoyl pyrrolidine, etc.)
  540     ....Acyclic carbon bonded directly to the -C(=X)- (e.g.,
               N-oleoylpyrrolidine, etc.)
  541     ...Chalcogen attached directly to the five-membered hetero ring
              by nonionic bonding (e.g., 3-pyrrolidinols, etc.)
  542     ....Chalcogen attached directly to ring nitrogen of the
               five-membered hetero ring by nonionic bonding (e.g.,
               pyrrolidine-N-oxides, etc.)
  543     ....Chalcogen bonded directly to a ring carbon of the
               five-membered hetero ring which is adjacent to the ring
               nitrogen (e.g., 2-pyrrolidones, etc.)
  544     .....And chalcogen bonded directly to a ring carbon of the five
                membered hetero ring which is not adjacent to the ring
                nitrogen (e.g., 2,4 pyrrolidinediones, etc.)
  545     .....And chalcogen bonded directly to the other ring carbon of
                the five-membered hetero ring which is adjacent to the ring
                nitrogen (e.g., succinimide, etc.)
  546     ......Nitrogen attached directly or indirectly to the
                 five-membered hetero ring by acyclic nonionic bonding
  547     ......Chalcogen attached indirectly to the five-membered hetero
                 ring by acyclic nonionic bonding
  548     ......Carbon to carbon unsaturation between ring members of the
                 five-membered hetero ring (e.g., maleimide, etc.)
  549     .......Benzene ring bonded directly to ring nitrogen of the
                  five-membered hetero ring (e.g., N-phenylmaleimide,
                  etc.)
  550     .....Nitrogen attached directly or indirectly to the
                five-membered hetero ring by acyclic nonionic bonding
  551     .....Chalcogen attached indirectly to the five-membered hetero
                ring by acyclic nonionic bonding
  552     .....Processes of forming 2-pyrrolidone which is unsubstituted
                or alkyl or alkenyl substituted only
  553     ......Directly from a cyano containing compound (e.g., from
                 succinonitrile, etc.)
  554     ......Directly from a -COO- containing compound (e.g., from
                 methyl acrylate, etc.)
  555     .....Purification or recovery of 2-pyrrolidone which is
                unsubstituted or alkyl substituted only
  556     ....Chalcogen attached indirectly to the five-membered hetero
               ring by acyclic nonionic bonding (e.g., 4-hydroxy
               -3-pyrrolidinemethanol, etc.)
  557     ...Nitrogen attached directly to the five-membered hetero ring
              by nonionic bonding
  558     ....The nitrogen is bonded directly to a ring carbon which is
               adjacent to the ring nitrogen of the five-membered hetero
               ring
  559     .....Carbocyclic ring bonded directly to the nitrogen
  560     ...Two double bonds between ring members of the five-membered
              hetero ring
  561     ....Nitrogen attached indirectly to the five-membered hetero
               ring by acyclic nonionic bonding
  562     ....Chalcogen attached indirectly to the five-membered hetero
               ring by acyclic nonionic bonding
  563     ....Benzene ring bonded directly to ring nitrogen of the five
               -membered hetero ring
  564     ....The five-membered hetero ring is unsubstituted or alkyl
               substituted only (e.g., pyrrole, etc.)
  565     ...One double bond between ring members of the five-membered
              hetero ring (i.e., pyrrolines)
  566     ...Nitrogen attached indirectly to the five-membered hetero ring
              by acyclic nonionic bonding
  567     ....The nitrogen is bonded directly to -C(=X)-, wherein X is
               chalcogen (e.g., 2 benzamidomethyl - pyrrolidines, etc.)
  568     .....Hydrogen or acyclic carbon bonded directly to the -C(=X)-
                (e.g., 2 pyrrolidine acrylamide, etc.)
  569     ....The nitrogen is in a substituent attached to the ring
               nitrogen of the five membered hetero ring
  570     ...Chalcogen attached indirectly to the five-membered hetero
              ring by acyclic nonionic bonding
  571     ....The chalcogen, X, is in a -C(=X)- group (e.g., 1-phenyl
               -2-pyrrolidino hexanone-1, etc.)
  572     .....The -C(=X)- is part of a -C(=X)X- group wherein the X's are
                the same or diverse chalcogens (e.g., 3-pyrrolidinemethanol
                propionates, etc.)
  573     ......The -C(=X)X- group is in a substituent attached to the
                 ring nitrogen of the five-membered hetero ring (e.g.,
                 beta-pyrrolidyl ethyl ester of benzoic acid, etc.)
  574     ....The chalcogen is in a substituent attached to the ring
               nitrogen of the five membered hetero ring
  575     .....Carbocyclic ring bonded directly to the chalcogen
  576     ......The substituent on the ring nitrogen of the five-membered
                 hetero ring contains a bicyclo carbocyclic ring system
  577     ...Benzene ring bonded directly to the five-membered hetero
              ring
  578     ...Benzene ring in a substituent attached to the ring nitrogen
              of the five membered hetero ring by nonionic bonding
  579     ...The five-membered hetero ring is unsubstituted or is alkyl
              substituted only (e.g., pyrrolidine, etc.)
  950     ..The hetero ring contains four members including nitrogen and
             carbon
  951     ...Plural hetero atoms in the hetero ring
  952     ...Chalcogen bonded directly to ring carbon of the hetero ring
  953     ...Nitrogen or -C(=X)-, wherein X is chalcogen, bonded directly
              to the hetero ring
  954     ..Hetero ring is three-membered including nitrogen and carbon
  955     ...Heavy metal, boron or silicon containing
  956     ...Phosphorus attached directly or indirectly to the hetero ring
              by nonionic bonding
  957     ....Plural phosphori
  958     ...Spiro
  959     ...Plural hetero atoms in the hetero ring
  960     ....Plural nitrogens in the hetero ring
  961     ...Polycyclo ring system having the hetero ring as one of the
              cyclos
  962     ...Additional hetero ring containing
  963     ....Plural three-membered nitrogen containing hetero rings
               bonded directly to the same ring
  964     ....Having -C(=X)-, wherein X is chalcogen, in chain between the
               hetero rings
  965     ...Chalcogen, nitrogen or halogen attached directly to the
              hetero ring by nonionic bonding
  966     ...Having -C(=X)-, wherein X is chalcogen, bonded directly to
              the hetero ring
  967     ...Nitrogen, other than as nitro or nitroso, attached indirectly
              to the hetero ring by nonionic bonding
  968     ...Chalcogen attached indirectly to the hetero ring by nonionic
              bonding
  969     ...The three-membered hetero ring is unsubstituted or alkyl
              substituted only