|  | C |
SECTION C — CHEMISTRY AND METALLURGY

CHEMISTRY

|  | C07 |
ORGANIC CHEMISTRY (such compounds as the oxides, sulphides, and oxysulphides of carbon, cyanogen, phosgene, hydrocyanic acid and salts thereof Fulltext... Hierarchy... Expanded...C01; macromolecular compounds Fulltext... Hierarchy... Expanded...C08; dyes Fulltext... Hierarchy... Expanded...C09; fermentation products Fulltext... Hierarchy... Expanded...C12)

|  | C07 |
Note(s) Salts of a compound, unless specifically provided for, are classified as that compound, e.g. aniline hydrochloride is classified as containing carbon, hydrogen and nitrogen only (in Fulltext... Hierarchy... Expanded...C07C 87/52), sodium oxalate is classified as oxalic acid (in Fulltext... Hierarchy... Expanded...C07C 55/06), and a mercaptide is classified as the mercaptan. Metal chelates are dealt with in the same way. Similarly, metal alcoholates and metal phenates are classified in Fulltext... Hierarchy... Expanded...C07C and not in Fulltext... Hierarchy... Expanded...C07F— the alcoholates in Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...C07C 31/28-C07C 31/32 and the phenates as the corresponding phenols in Fulltext... Hierarchy... Expanded...C07C 39/00. In the absence of an indication to the contrary, and with the exception referred to below, a compound is always classified in the last appropriate place in the classification system, e.g. a compound containing an acyclic chain and a heterocyclic ring is classified only as a heterocyclic compound, and a sterol is classified only as a cyclopentanophenanthrene compound. In general, and in the absence of an indication to the contrary (such as groups Fulltext... Hierarchy... Expanded...C07C 59/24, Fulltext... Hierarchy... Expanded...C07C 59/26), the terms "acyclic" and "aliphatic" are used to describe compounds in which there is no ring; and, if a ring were present, the compound would be taken by the "last place" rule to a later group for cycloaliphatic or aromatic compounds, if such a group exists. Where a compound or an entire group of compounds exists in tautomeric forms, it is classified as though existing in the form which is classified last in the system, unless the other form is specifically mentioned earlier in the system. Albumens, proteins, alkaloids of unknown structure, glucosides of unknown structure are examples of compounds to be found unter Fulltext... Hierarchy... Expanded...C07G. Inventions dealing with the preparation of chemical compounds might be classified both according to the type of reaction employed and according to the type of compound prepared, if suitable groups or sub-groups exits.

|  | C07D |
HETEROCYCLIC COMPOUNDS (peptides containing heterocyclic groups Fulltext... Hierarchy... Expanded...C07C 103/52)

|  | C07D |
Note(s) In the absence of an indication to the contrary (such as the mention of isatoic anhydride in Fulltext... Hierarchy... Expanded...C07D 87/10), the cyclic anhydride of a polycarboxylic acid is classified with the acid in Fulltext... Hierarchy... Expanded...C07C. In this sub-class When applying the "last place" rule, it is necessary to remember that the rule only applies in the absence of an indication to the contrary. Such an indication may take the form of a group specifically worded to cover particular compounds, e.g. "Fulltext... Hierarchy... Expanded...C07D 91/52.....Thiazolo-pyrimidines", which substances might otherwise have been classified in Fulltext... Hierarchy... Expanded...C07D 99/00) The indication may also take the form of the phrase "condensed with one or more other rings", and in this case the term "other rings" includes any ring except one which is covered later in Fulltext... Hierarchy... Expanded...C07D. Thus, for example, in spite of the wording of the Guide Heading before Fulltext... Hierarchy... Expanded...C07D 59/00, the compound is to be found in Fulltext... Hierarchy... Expanded...C07D 63/18, and not under Fulltext... Hierarchy... Expanded...C07D 99/00, as might have been supposed at first sight. It is also to be noted that there is no specific mention under Fulltext... Hierarchy... Expanded...C07D 63/00 of tetrahydrothiophene condensed with one or more other rings, but the use in Fulltext... Hierarchy... Expanded...C07D 63/02 of the plural form of the name implies that this group includes those compounds, the term "other rings" having the same meaning as give above. This is covered by Fulltext... Hierarchy... Expanded...C07D 63/02. It is also noteworthy that the alkaloids scopoline, morphine, and strychnine have for convenience been places under Fulltext... Hierarchy... Expanded...C07D 43/00, although they contain heterocyclic oxygen, and do not, accordingly, fit strictly under the Guide Heading before Fulltext... Hierarchy... Expanded...C07D 23/00. A further complication arises in the case of condensed ring systems, namely: which rings must be taken into account when determining the classification. The rule is as follows: Only single rings are to be considered, and bridged rings are to be ignored except where the bridged-ring system is one, such as quinoline, which is specifically named in the classification. Thus in the case of the compound only te two C5N rings are considered, and not the bridged C8N2 one, and the correct classification is under Fulltext... Hierarchy... Expanded...C07D 39/00 and not under Fulltext... Hierarchy... Expanded...C07D 53/00).

|  | C07D 1/00 - C07D 21/00 |
Heterocyclic compounds having oxygen alone as the hetero atom or atoms (sugars Fulltext... Hierarchy... Expanded...C07C 47/00, Fulltext... Hierarchy... Expanded...C07C 49/00 and Fulltext... Hierarchy... Expanded...C13; cyclopentanopolyhydrophenanthrenes containing one or more heterocyclic rings Fulltext... Hierarchy... Expanded...C07C 173/00)

|  | C07D 1/00 |
Heterocyclic compounds containing one or more rings each consisting of 1 oxygen atom and 2 carbon atoms

|  | C07D 1/02 |
· | Preparation of epoxy compounds

|  | C07D 1/04 |
· · | from a. -alkylene halohydrins

|  | C07D 1/06 |
· · | by oxidising unsaturated compounds

|  | C07D 1/08 |
· · · | by oxidising olefins

|  | C07D 1/10 |
· · · | by oxidising gats, fatty oils, or their fatty acids

|  | C07D 1/12 |
· · | a, -alkylene oxides

|  | C07D 1/14 |
· · | Ethylene oxide

|  | C07D 1/16 |
· | Epihalohydrins

|  | C07D 1/18 |
· | Epoxy alcohols; Their ethers or esters

|  | C07D 1/20 |
· | Epoxy acids

|  | C07D 1/22 |
· · | Esters thereof

|  | C07D 1/24 |
· · | Nitriles thereof

|  | C07D 3/00 |
Heterocyclic compounds containing one or more rings each consisting of 1 oxygen atom and 3 carbon atoms

|  | C07D 5/00 |
Heterocyclic compounds containing one or more rings each consisting of 1 oxygen atom and 4 carbon atoms

|  | C07D 5/02 |
· | Tetrahydrofurans

|  | C07D 5/04 |
· · | Substituted tetrahydrofurans

|  | C07D 5/06 |
· · | gamma-lactones

|  | C07D 5/08 |
· | Dihydrofurans

|  | C07D 5/10 |
· · | Substituted dihydrofurans

|  | C07D 5/12 |
· · · | Ascorbic acid

|  | C07D 5/14 |
· | Furans

|  | C07D 5/16 |
· · | Substituted furans

|  | C07D 5/18 |
· · · | having halogen directly attached to the ring

|  | C07D 5/20 |
· · · | Furfuryl alcohol

|  | C07D 5/22 |
· · · | Furfural

|  | C07D 5/24 |
· · · · | Preparation from natural products

|  | C07D 5/26 |
· · · | having one or more carboxyl groups directly attached to the ring

|  | C07D 5/28 |
· · · · | Pyromucic acid

|  | C07D 5/30 |
· · · | having one or more nitro groups directly attached to the ring

|  | C07D 5/32 |
· | Polycyclic compounds

|  | C07D 5/34 |
· · | Condensed dihydrofurans

|  | C07D 5/36 |
· · · | Coumarans

|  | C07D 5/38 |
· · · | Phthaleins

|  | C07D 5/40 |
· · | Condensed furns

|  | C07D 5/42 |
· · · | Coumarones

|  | C07D 5/44 |
· · · | Dibenzofurans (diphenylene oxides)

|  | C07D 5/46 |
· · | Compounds containing more than one furan ring

|  | C07D 7/00 |
Heterocyclic compounds containing one or more rings each consisting of 1 oxygen atom and 5 carbon atoms

|  | C07D 7/02 |
· | Tetrahydropyrans

|  | C07D 7/04 |
· · | Substituted tetrahydropyrans

|  | C07D 7/06 |
· · · | -lactones

|  | C07D 7/08 |
· | Dihydropyrans

|  | C07D 7/10 |
· · | Substituted dihydropyrans

|  | C07D 7/12 |
· | Pyrans

|  | C07D 7/14 |
· · | Substituted pyrans

|  | C07D 7/16 |
· · · | Pyrones

|  | C07D 7/18 |
· | Polycyclic compounds

|  | C07D 7/20 |
· · | Condensed dihydropyrans

|  | C07D 7/22 |
· · · | Tocopherols

|  | C07D 7/24 |
· · | Condensed pyrans

|  | C07D 7/26 |
· · · | 1,2[H]-Benzopyrans

|  | C07D 7/28 |
· · · · | Coumarin

|  | C07D 7/30 |
· · · · · | 4-hydroxy-coumarins

|  | C07D 7/32 |
· · · | 1,4[H]-Benzopyrans

|  | C07D 7/34 |
· · · · | gamma-chromones

|  | C07D 7/36 |
· · · · · | Furanochromones

|  | C07D 7/38 |
· · · · · | Rutin

|  | C07D 7/40 |
· · · | Isochromenes

|  | C07D 7/42 |
· · · | Xanthenes

|  | C07D 7/44 |
· · · · | Xanthones

|  | C07D 7/46 |
· · | Compounds containing more than one pyran ring

|  | C07D 9/00 |
Heterocyclic compounds containing one ore more rings each consisting of 1 oxygen atom and more than 5 carbon atoms

|  | C07D 11/00 |
Heterocyclic compounds containing one ore more rings each having the same structure and each consisting of 2 oxygen atoms and 1 or 2 carbon atoms

|  | C07D 13/00 |
Heterocyclic compounds containing one ore more rings each having the same structure and each consisting of 2 oxygen atoms and 3 carbon atoms

|  | C07D 13/02 |
· | 1,3-dioxolanes

|  | C07D 13/04 |
· · | Substituted dioxolanes

|  | C07D 13/06 |
· · · | Glycol carbonate

|  | C07D 13/08 |
· | 1,3-dioxoles

|  | C07D 13/10 |
· · | 1,3-benzo-dioxoles (methylenedioxybenzenes)

|  | C07D 15/00 |
Heterocyclic compounds containing one ore more rings each having the same structure and each consisting of 2 oxygen atoms and 4 carbon atoms

|  | C07D 15/02 |
· | 1,3-dioxanes

|  | C07D 15/04 |
· · | Substituted 1,3-dioxanes

|  | C07D 15/06 |
· · · | having halogen directly attached to the ring

|  | C07D 15/08 |
· · | 1,3-benzodioxanes

|  | C07D 15/10 |
· | 1,4-dioxanes

|  | C07D 15/12 |
· · | Substituted, 1,4-dioxanes

|  | C07D 15/14 |
· · · | having halogen directly attached to the ring

|  | C07D 15/16 |
· · · | Lactides

|  | C07D 15/18 |
· · | 2,3-benzo-1,4-dioxanes

|  | C07D 15/20 |
· · | Diphenylene dioxides

|  | C07D 17/00 |
Heterocyclic compounds containing one ore more rings each having the same structure and each consisting of 2 oxygen atoms and more than 4 carbon atoms

|  | C07D 19/00 |
Heterocyclic compounds containing one ore more rings each having the same structure and each consisting of more than 2 oxygen atoms and some carbon atoms

|  | C07D 21/00 |
Heterocyclic compounds containing rings each of which has oxygen as the only hetero element, the rings differing one from another either in structure or composition or both (furanochromones Fulltext... Hierarchy... Expanded...C07D 7/36)

|  | C07D 23/00 - C07D 57/00 |
Heterocyclic compounds having nitrogen alone as the hetero atom or atoms

|  | C07D 23/00 - C07D 57/00 |
Note(s) Unless specifically provided for, as in group Fulltext... Hierarchy... Expanded...C07D 31/22, a quaternary derivative of a heterocyclic N-compound is classified as that compound.

|  | C07D 23/00 |
Heterocyclic compounds containing one or more rings each consisting of 1 nitrogen atom and 2 carbon atoms

|  | C07D 23/02 |
· | a, -alkylenimines

|  | C07D 23/04 |
· · | Ethylenimine

|  | C07D 23/06 |
· · | N-substituted ethylenimines

|  | C07D 23/08 |
· · · | N, N-ethylene ureas; N,N-ethylene guanidines

|  | C07D 25/00 |
Heterocyclic compounds containing one or more rings each consisting of 1 nitrogen atom and 3 carbon atoms

|  | C07D 25/02 |
· | -lactams

|  | C07D 27/00 |
Heterocyclic compounds containing one or more rings each consisting of 1 nitrogen atom and 4 carbon atoms

|  | C07D 27/02 |
· | Tetrahydropyrroles (pyrrolidines)

|  | C07D 27/04 |
· · | Substituted tetrahydropyrroles

|  | C07D 27/06 |
· · · | Oxo-tetrahydropyrroles

|  | C07D 27/08 |
· · · · | 2-Pyrrolidones (gamma-lactams)

|  | C07D 27/10 |
· · · · | Succinimides

|  | C07D 27/12 |
· | Dihydropyrroles (pyrrolines)

|  | C07D 27/14 |
· · | Substituted dihydropyrroles

|  | C07D 27/16 |
· · · | Oxo-dihydropyrroles

|  | C07D 27/18 |
· · · · | Maleimimide

|  | C07D 27/20 |
· | Pyrroles

|  | C07D 27/22 |
· · | C-substituted pyrolles

|  | C07D 27/24 |
· · | N-substituted pyrroles

|  | C07D 27/26 |
· · | C- and N-substituted pyrroles

|  | C07D 27/28 |
· | Polycyclic compounds

|  | C07D 27/30 |
· · | Condensed tetrahydropyrroles

|  | C07D 27/32 |
· · · | Dihydroindolines

|  | C07D 27/34 |
· · · | Adrenochrome

|  | C07D 27/36 |
· · | Condensed dihydropyrroles

|  | C07D 27/38 |
· · · | Indolines

|  | C07D 27/40 |
· · · · | Indolinones

|  | C07D 27/42 |
· · · · · | Isatin

|  | C07D 27/44 |
· · · | Benz-(c,d)-indolines

|  | C07D 27/46 |
· · · · | Naphthostyrils

|  | C07D 27/48 |
· · · | Isoindolines

|  | C07D 27/50 |
· · · · | Isoindolinones (phthelimidines)

|  | C07D 27/52 |
· · · · · | Phthalimides

|  | C07D 27/54 |
· · | Condensed pyrroles

|  | C07D 27/56 |
· · · | Indoles; Indolenines

|  | C07D 27/58 |
· · · · | Preparation of indole from coal-tar

|  | C07D 27/60 |
· · · · | Tryptophane

|  | C07D 27/62 |
· · · · | Tryptamine

|  | C07D 27/64 |
· · · | Carbazoles

|  | C07D 27/66 |
· · · · | Purification

|  | C07D 27/68 |
· · · · | Substituted carbazoles

|  | C07D 27/70 |
· · · | Benz-indoles

|  | C07D 27/72 |
· · · · | Benz-(c,d)-indoles

|  | C07D 27/74 |
· · | Compounds containing more than one ring each consisting of 1 nitrogen atom and 4 carbon atoms

|  | C07D 27/76 |
· · · | Bilirubins; Porphyrins; Hemin; Chlorophyll

|  | C07D 27/78 |
· · · | Pyrroly-pyrroles

|  | C07D 27/80 |
· · · · | hydrogenated

|  | C07D 29/00 |
Heterocyclic compounds containing one or more hydrogenated pyridine rings none of which is condensed with any other rings

|  | C07D 29/02 |
· | Hexahydropyridines (piperidines)

|  | C07D 29/04 |
· · | Preparation by ring closure

|  | C07D 29/06 |
· · | Preparation by hydrogenation

|  | C07D 29/08 |
· · | Piperidine and its C-homologues

|  | C07D 29/10 |
· · | Piperidines N-substituted by hydrocarbon groups

|  | C07D 29/12 |
· · | Other piperidine derivatives which are substituted in the ring and/or outside the ring

|  | C07D 29/14 |
· · · | by one or more halogen atoms

|  | C07D 29/16 |
· · · | by one or more hydroxyl groups

|  | C07D 29/18 |
· · · · | Ethers thereof

|  | C07D 29/20 |
· · · | by one or more oxo groups

|  | C07D 29/22 |
· · · · | 2-piperidones (-lactams)

|  | C07D 29/24 |
· · · | by one or more carboxyl groups, carboxylic acid ester groups, or carboxylic acid halide groups

|  | C07D 29/26 |
· · · | by one or more nitrogen-containing groups

|  | C07D 29/28 |
· · · · | by one or more amino groups

|  | C07D 29/30 |
· · · · | by one or more carboxylic acid amide groups

|  | C07D 29/32 |
· · · · | by one or more cyano groups

|  | C07D 29/34 |
· · · | by one or more sulphur-containing groups

|  | C07D 29/36 |
· · · · | by one or more mercapto, thiother, or =S groups

|  | C07D 29/38 |
· | Tetrahydropyridines

|  | C07D 29/40 |
· | Dihydropyridines

|  | C07D 29/42 |
· · | Pyridones

|  | C07D 31/00 |
Heterocyclic compounds containing one or more pyridine rings none of which is condensed with any other ring

|  | C07D 31/02 |
· | Methods of preparation

|  | C07D 31/04 |
· · | by ring closure

|  | C07D 31/06 |
· · · | from unsaturated aliphatic compounds and ammonia

|  | C07D 31/08 |
· · · | from oxo compounds an ammonia

|  | C07D 31/10 |
· · · | from heterocyclic compounds having oxygen as the hetero atom and ammonia

|  | C07D 31/12 |
· · | by dealkylation of alkyl pyridines

|  | C07D 31/14 |
· · | by dehydrogenation of piperideines or other hydrogenated pyridines

|  | C07D 31/16 |
· | Separation; Purification

|  | C07D 31/18 |
· · | from coal-tar and the like

|  | C07D 31/20 |
· | Pyridine; Pyridines substituted by one or more hydrocarbon groups

|  | C07D 31/22 |
· · | Quaternary compounds thereof

|  | C07D 31/24 |
· | Other pyridine derivatives which are substituted in the ring and/or outside the ring

|  | C07D 31/26 |
· · | by one or more halogen atoms

|  | C07D 31/28 |
· · | by one or more hydroxyl groups and/or etherified hydroxyl groups

|  | C07D 31/30 |
· · · | directly attached to the ring

|  | C07D 31/32 |
· · | by one or more oxo groups

|  | C07D 31/34 |
· · | by one or more carboxyl groups, carboxylic acid ester groups, or carboxylic acid halide groups

|  | C07D 31/36 |
· · · | directly attached to the ring

|  | C07D 31/38 |
· · · · | Preparation of pyridine carboxylic acids by oxydisig pyridines or condensed pyridines

|  | C07D 31/40 |
· · | by one or more nitrogen containing groups

|  | C07D 31/42 |
· · · | by one or more amino groups

|  | C07D 31/44 |
· · · | by open or more carboxylic acid amide groups

|  | C07D 31/46 |
· · · | by one or more cyano groups

|  | C07D 31/48 |
· · | by one or more sulphur-containing groups

|  | C07D 31/50 |
· · · | by one or more mercapto, thioether, or =S groups

|  | C07D 33/00 |
Heterocyclic compounds containing one or more rings of the quinoline type

|  | C07D 33/02 |
· | Decahydroquinolines

|  | C07D 33/04 |
· · | Preparation by hydrogenation of quinolines

|  | C07D 33/06 |
· | Octahydroquinolines

|  | C07D 33/08 |
· | Hexahydroquinolines

|  | C07D 33/10 |
· | Tetrahydroquinolines

|  | C07D 33/12 |
· | Dihyroquinolines

|  | C07D 33/14 |
· | Quinolines

|  | C07D 33/16 |
· · | Methods of preparation

|  | C07D 33/18 |
· · · | by ring closure

|  | C07D 33/20 |
· · · · | from aromatic amines and glycerol or oxo compounds

|  | C07D 33/22 |
· · · · | from o-amino-benzaldehyde and oxo compounds

|  | C07D 33/24 |
· · · | by dehydrogenation of hydrogenated quinolines

|  | C07D 33/26 |
· · | Separation; Purification

|  | C07D 33/28 |
· · · | from coal-tar and the like

|  | C07D 33/30 |
· · | Quinoline; Quinolines substituted by one or more hydrocarbon groups

|  | C07D 33/32 |
· · · | Quaternary compounds thereof

|  | C07D 33/34 |
· · | Other quinoline derivatives which are substituted in the ring and/or outside the ring

|  | C07D 33/36 |
· · · | by one or more halogen atoms

|  | C07D 33/38 |
· · · | by one or more hydroxyl groups and/or etherified hydroxyl groups

|  | C07D 33/40 |
· · · · | directly attached to the hetero ring

|  | C07D 33/42 |
· · · · · | 2-hydroxy quinolines

|  | C07D 33/44 |
· · · · | 8-hydroxy quinolines

|  | C07D 33/46 |
· · · | by one or more oxo groups

|  | C07D 33/48 |
· · · | by one or more carboxyl groups, carboxylic acid ester groups, or carboxylic acid halide groups

|  | C07D 33/50 |
· · · | by one or more nitrogen-containing groups

|  | C07D 33/52 |
· · · · | by one or more amino groups

|  | C07D 33/54 |
· · · · · | Amono alkylaminoquinolines

|  | C07D 33/56 |
· · · · | by one or more carboxylic acid amide groups

|  | C07D 33/58 |
· · · · | by one or more cyano groups

|  | C07D 33/60 |
· · · | by one ore more sulphur-containing groups

|  | C07D 33/62 |
· · · · | by one or more mercapto, thioether, or =S groups

|  | C07D 35/00 |
Heterocyclic compounds containing one or more rings of the isoquinoline type

|  | C07D 35/02 |
· | Decahydroisoquinolines

|  | C07D 35/04 |
· · | Preparation by hydrogenation of isoquinolines

|  | C07D 35/06 |
· | Octahydroisoquinolines

|  | C07D 35/08 |
· | Hexahydroisoquinolines

|  | C07D 35/10 |
· | Tetrahydroisoquinolines

|  | C07D 35/12 |
· · | Preparation from phenyl-ethyl amines and aldehydes

|  | C07D 35/14 |
· | Dihydroisoquinolines

|  | C07D 35/16 |
· · | Preparation from acylated -phenol-ethyl amines

|  | C07D 35/18 |
· | Isoquinolines

|  | C07D 35/20 |
· · | Preparation by ring closure

|  | C07D 35/22 |
· · | Isoquinoline; Isoquinolines substituted by one or more hydrocarbon groups

|  | C07D 35/24 |
· · | Other isoquinoline derivatives which are substituted in the ring and/or outside the ring

|  | C07D 35/26 |
· · · | by one or more halogen atoms

|  | C07D 35/28 |
· · · | by one or more hydroxyl groups and/or etherified hydroxyl groups, e.g. papaverine

|  | C07D 35/30 |
· · · | by one or more oxo groups

|  | C07D 35/32 |
· · · | by one or more carboxyl groups, carboxylic acid ester groups, or carboxylic acid halide groups

|  | C07D 35/34 |
· · · | by one or more nitrogen-containing groups

|  | C07D 35/36 |
· · · · | by one or more amino groups

|  | C07D 35/38 |
· · · · | by one or more carboxylic acid amide groups

|  | C07D 35/40 |
· · · · | by one or more cyano groups

|  | C07D 35/42 |
· · · | by one or more sulphur-containing groups

|  | C07D 35/44 |
· · · · | by one or more mercapto, thioether, or =S groups

|  | C07D 37/00 |
Heterocyclic compounds containing one or more rings of the acridine type

|  | C07D 37/02 |
· | Hydrogenated acridines

|  | C07D 37/04 |
· · | not completely hydrogenated

|  | C07D 37/06 |
· · · | Acridans

|  | C07D 37/08 |
· | Acridines

|  | C07D 37/10 |
· · | Acridine; Acridines substituted by one or more hydrocarbon groups

|  | C07D 37/12 |
· · | Other acridine derivatives which are substituted in the ring and/or outside the ring

|  | C07D 37/14 |
· · · | by one or more halogen atoms

|  | C07D 37/16 |
· · · | by one or more hydroxyl groups and/or etherified hydroxyl groups

|  | C07D 37/18 |
· · · | by one or more oxo groups

|  | C07D 37/20 |
· · · | by one or more carboxyl groups, carboxylic acid ester groups, or carboxylic acid halide groups

|  | C07D 37/22 |
· · · | by one or more nitrogen-containing groups

|  | C07D 37/24 |
· · · · | by one or more amino groups

|  | C07D 37/26 |
· · · · | by one or more carboxylic acid amide groups

|  | C07D 37/28 |
· · · · | by one or more cyano groups

|  | C07D 37/30 |
· · · | by one or more sulphur-containing groups

|  | C07D 39/00 |
Other heterocyclic compounds containing one or more pyridine or hydrogenated pyridine rings at least one of which is condensed with one or more rings of the same type and/or with carbocyclic rings

|  | C07D 39/02 |
· | Phenanthridines

|  | C07D 39/04 |
· · | Recovery from coal-tar

|  | C07D 39/06 |
· | Quinuclidines

|  | C07D 39/08 |
· | Nor-camphidines; Camphidines

|  | C07D 39/10 |
· | Naphtyridines

|  | C07D 39/12 |
· | Quinolizines

|  | C07D 39/14 |
· | Phenanthrolines

|  | C07D 39/16 |
· | 1,8-naphthalimides

|  | C07D 41/00 |
Heterocyclic compounds containing one or more rings each consisting of 1 nitrogen atom and more than 5 carbon atoms

|  | C07D 41/02 |
· | Hexamethylenimines

|  | C07D 41/04 |
· · | Substituted hexamethylenimines

|  | C07D 41/06 |
· · · | epsilon-lactams

|  | C07D 41/08 |
· | Azepines

|  | C07D 43/00 |
Heterocyclic compounds containing the ring system of an alkaloid type specified below (substituted purines Fulltext... Hierarchy... Expanded...C07D 57/38)

|  | C07D 43/02 |
· | containing the ring system of nicotine

|  | C07D 43/04 |
· · | Obtaining from natural raw materials

|  | C07D 43/06 |
· | containing the ring system of tropa alkaloids

|  | C07D 43/08 |
· · | Obtaining from extracts of natural raw materials

|  | C07D 43/10 |
· · | Atropine

|  | C07D 43/12 |
· · | Tropine

|  | C07D 43/14 |
· · | Cocaine

|  | C07D 43/16 |
· · | Scopoline

|  | C07D 43/18 |
· | Granatanines

|  | C07D 43/20 |
· | containing the ring system of ergot alkaloids

|  | C07D 43/22 |
· · | Obtaining from extracts of natural raw materials

|  | C07D 43/24 |
· | containing the ring system of cinchona alkaloids

|  | C07D 43/26 |
· · | Obtaining from extracts of natural raw materials

|  | C07D 43/28 |
· | containing the ring system of opium alkaloids (papaverine and its derivatives Fulltext... Hierarchy... Expanded...C07D 35/28)

|  | C07D 43/30 |
· · | Obtaining from extract of natural raw materials

|  | C07D 43/32 |
· · | Morphine

|  | C07D 43/34 |
· | containing the ring system of strychnine

|  | C07D 43/36 |
· · | Obtaining from extracts of natural raw materials

|  | C07D 43/38 |
· | containing the ring system of iboga alkaloids

|  | C07D 45/00 |
Heterocyclic compounds containing one or more rings each consisting of 2 nitrogen atoms and 1 carbon atom (diazo compounds Fulltext... Hierarchy... Expanded...C07C 113/00)

|  | C07D 47/00 |
Heterocyclic compounds containing one or more rings each having the same structure and each consisting of 2 nitrogen atoms and 2 carbon atoms

|  | C07D 49/00 |
Heterocyclic compounds containing one or more rings each having the same structure and each consisting of 2 nitrogen atoms and 3 carbon atoms

|  | C07D 49/02 |
· | containing one or more 1,2-diazole or hydrogenated 1,2-diazole rings

|  | C07D 49/04 |
· · | Pyrazolidones; Substituted pyrazolidones

|  | C07D 49/06 |
· · · | Amino-pyrazolidones with amine group(s) directly attached to the ring

|  | C07D 49/08 |
· · · | Dioxopyrazolidines

|  | C07D 49/10 |
· · | Pyrazolines; Substituted pyrazolines

|  | C07D 49/12 |
· · · | Amino-pyrazolines with amine group(s)

|  | C07D 49/14 |
· · · | Pyrazolones; Substituted pyrazolones

|  | C07D 49/16 |
· · · · | Amino-pyrazolones with amine group(s) directly attached to the ring

|  | C07D 49/18 |
· · | Pyrazoles; Substituted pyrazoles

|  | C07D 49/20 |
· · · | Amino-pyrazoles with amine group(s) directly attached to the ring

|  | C07D 49/22 |
· · · · | Benzene sulphonylamido pyrazoles

|  | C07D 49/24 |
· · · | Pyrazoloanthrones

|  | C07D 49/26 |
· · | Pyrazolo-pyrazoles

|  | C07D 49/28 |
· · · | hydrogenated

|  | C07D 49/30 |
· | containing one or more 1,3-diazole or hydrogenated 1,3-diazole rings

|  | C07D 49/32 |
· · | Hydantoins

|  | C07D 49/34 |
· · | Imidazolines

|  | C07D 49/36 |
· · | Imidazoles

|  | C07D 49/38 |
· · · | Benzimidazoles

|  | C07D 49/40 |
· · · | Naphthimidazoles

|  | C07D 49/42 |
· · | Imidazolo-imidazoles

|  | C07D 49/44 |
· · · | hydrogenated

|  | C07D 51/00 |
Heterocyclic compounds containing one or more rings each having the same structure and each consisting of 2 nitrogen atoms and 4 carbon atoms

|  | C07D 51/02 |
· | containing one or more 1,2-diazine or hydrogenated 1,2-diazine rings

|  | C07D 51/04 |
· · | Pyridazines

|  | C07D 51/06 |
· · | Phthalazines

|  | C07D 51/08 |
· · | Cinnolines

|  | C07D 51/10 |
· · · | Benzo-cinnolines

|  | C07D 51/12 |
· · | Pyridazo-pyridazines

|  | C07D 51/14 |
· · · | hydrogenated

|  | C07D 51/16 |
· | containing one or more 1,3-diazine or hydrogenated 1,3-diazine rings

|  | C07D 51/18 |
· · | Hexahydropyrimidines

|  | C07D 51/20 |
· · · | Barbituric acids; Inorganic salts thereof

|  | C07D 51/22 |
· · · · | Salts of organic bases; Organic double compounds

|  | C07D 51/24 |
· · · | Thiobarbituric acids; Inorganic salts thereof

|  | C07D 51/26 |
· · · · | Salts of organic bases; Organic double compounds

|  | C07D 51/28 |
· · | Tetrahydropyrimidines

|  | C07D 51/30 |
· · · | Uracils

|  | C07D 51/32 |
· · · | Thiracils

|  | C07D 51/34 |
· · | Dihydropyrimidines

|  | C07D 51/36 |
· · | Pyrimidines

|  | C07D 51/38 |
· · · | having one or more hydroxyl groups directly attached to the ring

|  | C07D 51/40 |
· · · | having one or more mercapto groups directly attached to the ring

|  | C07D 51/42 |
· · · | having one or more amine groups directly attached to the ring

|  | C07D 51/44 |
· · · · | Amino benzene sulphonylamido pyrimidines (sulphapyrimidines)

|  | C07D 51/46 |
· · | condensed

|  | C07D 51/48 |
· · · | Quinazolines

|  | C07D 51/50 |
· · | Nucleosides; Nucleotides; Nucleic acids

|  | C07D 51/52 |
· · · | with pyrimidine bases

|  | C07D 51/54 |
· · · | with purine bases

|  | C07D 51/56 |
· · | Pyrimido pyrimidines; Hydrogenated pyrimido pyrimidines

|  | C07D 51/58 |
· · · | Pyrimido [4,5-d] pyrimidines

|  | C07D 51/60 |
· · · | Pyrimido [5,4-d] pyrimidines

|  | C07D 51/62 |
· | containing one or more 1,4-diazine or hydrogenated 1,4-diazine rings

|  | C07D 51/64 |
· · | Hexahydropyrazines (piperazines)

|  | C07D 51/66 |
· · · | C-substituted piperazines

|  | C07D 51/68 |
· · · · | Oxopiperazines; C-substituted oxo-piperazines

|  | C07D 51/70 |
· · · | N-substituted piperazines

|  | C07D 51/72 |
· · · | C- and N-substituted piperazines

|  | C07D 51/74 |
· · | Tetrahydropyrazines; Dihydropyrazines; Derivatives thereof, e.g. aspergillic acid

|  | C07D 51/76 |
· · | Pyrazine; Derivatives thereof

|  | C07D 51/78 |
· · | Quinoxalines; Hydrogenated quinoxalines

|  | C07D 51/80 |
· · | Phenazines

|  | C07D 51/82 |
· · | Pyrazo pyrazines; Hydrogenated pyrazo pyrazines

|  | C07D 51/84 |
· · | 1,4-diazabicyclo [2,2,2] octanes

|  | C07D 53/00 |
Heterocyclic compounds containing one or more rings each having the same structure and each consisting of 2 nitrogen atoms and more than 4 carbon atoms

|  | C07D 53/02 |
· | Diazepines

|  | C07D 53/04 |
· | Benzodiazepines

|  | C07D 53/06 |
· · | 1,4-benzodiazepines

|  | C07D 55/00 |
Heterocyclic compounds containing one or more rings each having the same structure and each consisting of more than 2 nitrogen atoms and 1 or more carbon atoms

|  | C07D 55/02 |
· | containing one or more 1,2,3-triazole or hydrogenated 1,2,3-triazole rings

|  | C07D 55/04 |
· · | Benzo-1,2,3,-triazoles; Naphtho-1,2,3-triazoles

|  | C07D 55/06 |
· | containing one or more 1,2,4-triazole or hydrogenated 1,2,4-triazole rings

|  | C07D 55/08 |
· | containing one or more 1,2,3-triazine or hydrogenated 1,2,3-triazine rings

|  | C07D 55/10 |
· | containing one or more 1,2,4-triazine or hydrogenated 1,2,4-triazine rings

|  | C07D 55/12 |
· | containing one or more 1,3,5-triazine or hydrogenated 1,3,5-triazine rings

|  | C07D 55/14 |
· · | hydrogenated

|  | C07D 55/16 |
· · · | 1,3,5-trinitro-hexahydro-triazine

|  | C07D 55/18 |
· · | Monoamino-1,3,5-triazines

|  | C07D 55/20 |
· · | Diamino-1,3,5-triazines

|  | C07D 55/22 |
· · | Triamino-1,3,5-triazines

|  | C07D 55/24 |
· · · | Melamine; Purification thereof; N-Derivatives thereof

|  | C07D 55/26 |
· · · · | Preparation of melamine from calcium cyanamide, cyanamide or dicyandiamide

|  | C07D 55/28 |
· · · · | Preparation of melamine from urea or carbondioxide and ammonia

|  | C07D 55/30 |
· · · · | Preparation of melamine from other materials

|  | C07D 55/32 |
· · · · | Alkylol melamines; Etherified alkylol melamines

|  | C07D 55/34 |
· · | Mono- and di-hydroxy-1,3,5-triazines

|  | C07D 55/36 |
· · | Cyanuric acid; Derivatives thereof (melamine Fulltext... Hierarchy... Expanded...C07D 55/24)

|  | C07D 55/38 |
· · · | Isocyanurates

|  | C07D 55/40 |
· · · | Chloro isocyanuric acids

|  | C07D 55/42 |
· · · | Cyanuric halides

|  | C07D 55/44 |
· · | Amino-hydroxy-1,3,5-triazines

|  | C07D 55/46 |
· · | Amino-halogeno-1,3,5-triazines

|  | C07D 55/48 |
· · | Mono- and di-halogeno-1,3,5-triazines

|  | C07D 55/50 |
· · | 1,3,5-triazines substituted by groups not mentioned in Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...C07D 55/16-C07D 55/48

|  | C07D 55/52 |
· · | Hexamethylenetetramine

|  | C07D 55/54 |
· | containing one or more rings consisting of 3 nitrogen atoms and more than 3 carbon atoms

|  | C07D 55/56 |
· | containing one or more rings consisting of 4 nitrogen atoms and 1 carbon atoms

|  | C07D 55/58 |
· | containing one or more rings consisting of 4 nitrogen atoms and 2 carbon atoms

|  | C07D 55/60 |
· | containing one or more rings consisting of 4 nitrogen atoms and more than 2 carbon atoms

|  | C07D 55/62 |
· · | Coorinoids (Vitamin B12)

|  | C07D 55/64 |
· | containing one or more rings consisting of more than 4 nitrogen atoms and 1 or more carbon atoms (cyclic peptides Fulltext... Hierarchy... Expanded...C07C 103/52)

|  | C07D 57/00 |
Heterocyclic compounds containing rings each of which has nitrogen as the only hetero element the rings differing one from another either in structure or composition or both

|  | C07D 57/02 |
· | in which the different hetero rings are condensed together

|  | C07D 57/04 |
· · | containing one or more pyridine rings

|  | C07D 57/06 |
· · · | Carbolines

|  | C07D 57/08 |
· · · · | Rauwolfia alkaloids

|  | C07D 57/10 |
· · · · · | containing the ring system of yohimbane

|  | C07D 57/12 |
· · | containing one or more pyrimidine rings (purines Fulltext... Hierarchy... Expanded...C07D 57/36)

|  | C07D 57/14 |
· · · | pyrrolo-pyrimidines

|  | C07D 57/16 |
· · · | pyrazolo-pyrimidines

|  | C07D 57/18 |
· · · | triazolo-pyrimidines

|  | C07D 57/20 |
· · · | pyrido-pyrimidines

|  | C07D 57/22 |
· · | containing one or more pyridazine rings

|  | C07D 57/24 |
· · | containing one or more pyrazine rings

|  | C07D 57/26 |
· · · | 1,1'-ethylene-2,2'-dipyridylium salts

|  | C07D 57/28 |
· · · | Pterines

|  | C07D 57/30 |
· · · · | Folic acid

|  | C07D 57/32 |
· · · | Flavines

|  | C07D 57/34 |
· · | containing one or more tirazine rings

|  | C07D 57/36 |
· · | Purines

|  | C07D 57/38 |
· · · | Substituted purines

|  | C07D 57/40 |
· · · · | Xanthines

|  | C07D 57/42 |
· · · · · | Theobromine

|  | C07D 57/44 |
· · · · · · | Obtaining from extracts of natural raw materials

|  | C07D 57/46 |
· · · · · · | Salts or double compounds thereof

|  | C07D 57/48 |
· · · · · | Theophylline

|  | C07D 57/50 |
· · · · · · | Obtaining from extracts of natural raw materials

|  | C07D 57/52 |
· · · · · · | Salts or double compounds thereof

|  | C07D 57/54 |
· · · · · | Caffeine

|  | C07D 57/56 |
· · · · · · | Obtaining from extracts of natural raw materials

|  | C07D 57/58 |
· · · · · · | Salts or double compounds thereof

|  | C07D 57/60 |
· · · · | having two hydroxyl groups both directly attached to the ring system

|  | C07D 57/62 |
· · · · | having one or more mercapto groups directly attached to the ring system

|  | C07D 57/64 |
· · · · | having one or more amine groups directly attached to the ring system

|  | C07D 59/00 - C07D 83/00 |
Heterocyclic compounds having only sulphur, selenium, or tellurium as the hetero atom or atoms

|  | C07D 59/00 |
Heterocyclic compounds containing one or more rings each consisting of 1 sulphur atom and 2 carbon atoms

|  | C07D 61/00 |
Heterocyclic compounds containing one or more rings each consisting of 1 sulphur atom and 3 carbon atoms

|  | C07D 63/00 |
Heterocyclic compounds containing one or more rings each consisting of 1 sulphur atom and 4 carbon atoms

|  | C07D 63/02 |
· | Tetrahydrothiophenes

|  | C07D 63/04 |
· · | Substituted tetrahydrothiophenes

|  | C07D 63/06 |
· · · | gamma-thiolactones

|  | C07D 63/08 |
· | Dihydrothiophenes

|  | C07D 63/10 |
· | Thiophenes

|  | C07D 63/12 |
· · | Substituted thiophenes

|  | C07D 63/14 |
· · · | having more halogen directly attached to the ring

|  | C07D 63/16 |
· · · | having one or more carboxyl groups directly attached to the ring

|  | C07D 63/18 |
· · | Thiophenes condensed with one or more other rings

|  | C07D 63/20 |
· · · | Thionaphthenes

|  | C07D 63/22 |
· · · · | Substituted thionaphthenes

|  | C07D 63/24 |
· · · | Diphenylene sulphides

|  | C07D 65/00 |
Heterocyclic compounds containing one or more rings each consisting of 1 sulphur atom and 5 carbon atoms

|  | C07D 65/02 |
· | Tetrahydrothiopyrans (pentamethylene sulphides)

|  | C07D 65/04 |
· · | Substituted tetrahydrothiopyrans

|  | C07D 65/06 |
· · · | -thiolactones

|  | C07D 65/08 |
· | Dihydrothiopyrans

|  | C07D 65/10 |
· | Thiopyrans

|  | C07D 65/12 |
· · | Substituted thiopyrans

|  | C07D 65/14 |
· · | Thiopyrans condensed with one or more other rings

|  | C07D 65/16 |
· · · | Thioxanthenes

|  | C07D 65/18 |
· · · · | Thioxanthones

|  | C07D 67/00 |
Heterocyclic compounds containing one or more rings each having the same structure and each consisting of 1 sulphur atom and more than 5 carbon atoms

|  | C07D 69/00 |
Heterocyclic compounds containing one or more rings each having the same structure and each consisting of 2 sulphur atoms and 2 carbon atoms

|  | C07D 71/00 |
Heterocyclic compounds containing one or more rings each having the same structure and each consisting of 2 sulphur atoms and 3 carbon atoms

|  | C07D 71/02 |
· | 5-thion-1,2-dithioles

|  | C07D 71/04 |
· | Lipoic acid; Derivative thereof

|  | C07D 73/00 |
Heterocyclic compounds containing one or more rings each consisting of 2 sulphur atom and 4 carbon atoms

|  | C07D 73/02 |
· | Diphenylene disulphide (Thianthrene)

|  | C07D 75/00 |
Heterocyclic compounds containing one or more rings each having the same structure and each consisting of 2 sulphur atoms and more than 4 carbon atoms

|  | C07D 77/00 |
Heterocyclic compounds containing one or more rings each having the same structure and each consisting of more than 2 sulphur atoms and some carbon atoms

|  | C07D 77/02 |
· | Trimethylene trisulphone

|  | C07D 79/00 |
Heterocyclic compounds containing rings each of which has sulphur as the only hetero element, the rings differing one from another either in structure or composition or both

|  | C07D 81/00 |
Heterocyclic compounds having selenium as the hetero atom or atoms

|  | C07D 83/00 |
Heterocyclic compounds having tellurium as the hetero atom or atoms

|  | C07D 85/00 - C07D 99/00 |
Heterocyclic compounds having oxygen, nitrogen, sulphur, selenium, and tellurium in combinations of two or more different elements as the hetero atoms

|  | C07D 85/00 - C07D 99/00 |
Note(s) A quarternary derivative of a heterocyclic N-compound is always classified as that compound.

|  | C07D 85/00 |
Heterocyclic compounds containing one or more rings each having the same structure and each consisting of 3,4, or 5 members, the members being 1 or more oxygen atoms, 1, or more nitrogen atoms, and 1 or more carbon atoms

|  | C07D 85/02 |
· | containing rings consisting of 3 members

|  | C07D 85/04 |
· | containing rings consisting of 4 members

|  | C07D 85/06 |
· | containing rings consisting of 5 members

|  | C07D 85/08 |
· · | Isoxazolidines

|  | C07D 85/10 |
· · · | Isoxazolidones

|  | C07D 85/12 |
· · · · | Amono-isoxazolidones with amine group(s) directly attached to the ring

|  | C07D 85/14 |
· · · | Dioxo-isoxazolidines

|  | C07D 85/16 |
· · | Isoxazolines

|  | C07D 85/18 |
· · · | Isoxazolones

|  | C07D 85/20 |
· · · · | Amono-isoxazolones group(s) directly attached to the ring

|  | C07D 85/22 |
· · | Isoxazoles

|  | C07D 85/24 |
· · · | Benzene sulphonamido isoxazoles

|  | C07D 85/26 |
· · | Oxazolidines

|  | C07D 85/28 |
· · · | Oxazolidones -(2) (cyclic urethanes)

|  | C07D 85/30 |
· · · | Oxazolidones -(4)

|  | C07D 85/32 |
· · · | Oxazolidones -(5)

|  | C07D 85/34 |
· · · | Dioxo-oxazolidines

|  | C07D 85/36 |
· · | Oxazolines

|  | C07D 85/38 |
· · · | Oxazolones -(2)

|  | C07D 85/40 |
· · · | Oxazolones -(4)

|  | C07D 85/42 |
· · · | Oxazolones -(5) (azlactones)

|  | C07D 85/44 |
· · | Oxazoles

|  | C07D 85/46 |
· · · | Benzene sulphonamido oxazoles

|  | C07D 85/48 |
· · · | Oxazoles condensed with one or more other rings

|  | C07D 85/50 |
· · | 1,2,3-oxadiazoles (diazo oxides Fulltext... Hierarchy... Expanded...C07C 113/00)

|  | C07D 85/52 |
· · | 1,2,4-oxadiazoles

|  | C07D 85/54 |
· · | 1,3,4-oxadiazoles

|  | C07D 85/56 |
· · | 1,2,5-oxadiazoles

|  | C07D 87/00 |
Heterocyclic compounds containing one or more rings each having the same structure and each consisting of 6 or more members, the members being 1 or more oxygen atoms, 1 or more nitrogen atoms, and 1 or more carbon atoms

|  | C07D 87/02 |
· | containing rings consisting of 6 members

|  | C07D 87/04 |
· · | Tetrahydro-1,2-oxazines

|  | C07D 87/06 |
· · | Tetrahydro-1,3-oxazines

|  | C07D 87/08 |
· · · | Tetrahydro-1,3-oxazinones

|  | C07D 87/10 |
· · · | Dioxo-tetrahydro-1,3-oxazines, e.g. isatoic anhydride

|  | C07D 87/12 |
· · | Dihydro-1,2-oxazines

|  | C07D 87/14 |
· · | Dihydro-1,3-oxazines

|  | C07D 87/16 |
· · · | Dihydro-1,3-oxazinones

|  | C07D 87/18 |
· · | 1,2-oxazines

|  | C07D 87/20 |
· · | 1,3-oxazines

|  | C07D 87/22 |
· · | Tetrahydro-1,4-oxazines (morpholines)

|  | C07D 87/24 |
· · · | Methods of preparation by ring closure

|  | C07D 87/26 |
· · · | Morpholines substituted by one or more hydrocarbon groups

|  | C07D 87/28 |
· · · | Other morpholine derivatives which are substituted in the ring and/or outside the ring

|  | C07D 87/30 |
· · · · | by one or more halogen atoms

|  | C07D 87/32 |
· · · · | by one or more hydroxyl groups and/or etherified hydroxyl groups

|  | C07D 87/34 |
· · · · | by one or more oxo groups

|  | C07D 87/36 |
· · · · | by one or more carboxyl groups, carboxylic acid ester groups, or carboxylic acid halide groups

|  | C07D 87/38 |
· · · · | by one or more nitrogen-containing groups

|  | C07D 87/40 |
· · · · · | by one or more amino groups

|  | C07D 87/42 |
· · · · · | by one or more carboxylic acid amide groups

|  | C07D 87/44 |
· · · · · | by one or more cyano groups

|  | C07D 87/46 |
· · · · | by one or more sulphur-containing groups

|  | C07D 87/48 |
· · | Dihydro-1,4-oxazines

|  | C07D 87/50 |
· · | 1,4-oxazines

|  | C07D 87/52 |
· · | Oxadiazines

|  | C07D 87/54 |
· | containing rings consisting of 7 or more members

|  | C07D 89/00 |
Hetrocyclic compounds containing one or more rings each having the same structure and each consisting of 1 or more oxygen atoms, 1 or more sulphur atoms, and 1 or more carbon atoms

|  | C07D 89/02 |
· | containing rings consisting of 3 or 4 members

|  | C07D 89/04 |
· | containing rings consisting of 5 members

|  | C07D 89/06 |
· · | consisting of 1 oxygen atom, 1 sulphur atom and 3 carbon atoms, e.g. naphthosultones

|  | C07D 89/08 |
· · | consisting of 2 oxygen atoms, 1 sulphur atom and 2 carbon atoms, e.g. ethylene glycol sulphite

|  | C07D 89/10 |
· | containing rings consisting of 6 members

|  | C07D 89/12 |
· · | consisting of 1 oxygen atom, 1 sulphur atom and 4 carbon atoms

|  | C07D 89/14 |
· · · | 1,4-Oxathianes (Thioxanes)

|  | C07D 89/16 |
· · · | Phenoxathiines

|  | C07D 89/18 |
· · | consisting of 2 oxygen atoms, 1 sulphur atom and 3 carbon atoms, e.g. 1,3-propylene glycol sulphite

|  | C07D 89/20 |
· | containing rings consisting of 7 or more members

|  | C07D 91/00 |
Heterocyclic compounds containing one or more rings each having the same structure and each consisting of 3,4 or 5 members, the members being 1 or more nitrogen atoms, 1 or more sulphur atoms and 1 or more carbon atoms

|  | C07D 91/02 |
· | containing rings consisting of 3 or 4 members

|  | C07D 91/04 |
· | containing rings consisting of 5 members

|  | C07D 91/06 |
· · | Isothiazolidines

|  | C07D 91/08 |
· · · | 1,3-sultams

|  | C07D 91/10 |
· · | Isothiazolines

|  | C07D 91/12 |
· · | Isothiazoles

|  | C07D 91/14 |
· · | Thiazolidines

|  | C07D 91/16 |
· · · | Substituted thiazolidines

|  | C07D 91/18 |
· · · · | having one or more amine groups directly attached to the ring

|  | C07D 91/20 |
· · · · | having one or more mercapto groups directly attached to the ring

|  | C07D 91/22 |
· · | Thiazolines

|  | C07D 91/24 |
· · · | Substituted thiazolines

|  | C07D 91/26 |
· · · · | having one or more amine groups directly attached to the ring

|  | C07D 91/28 |
· · · · | having one or more mercapto groups directly attached to the ring

|  | C07D 91/30 |
· · | Thizoles

|  | C07D 91/32 |
· · · | Substituted thiazoles

|  | C07D 91/34 |
· · · · | having one or more amino groups directly attached to the ring

|  | C07D 91/36 |
· · · · · | Amino benzene sulphonyl-amido thiazoles (Sulphathiazoles)

|  | C07D 91/38 |
· · · · | having one or more mercapto groups directly attached to the ring

|  | C07D 91/40 |
· · · · | Thiazolsulphonamides

|  | C07D 91/42 |
· · · | Thiazoles condensed with one or more other rings

|  | C07D 91/44 |
· · · · | Benzothiazoles

|  | C07D 91/46 |
· · · · | having one or more amino groups directly attached to the ring system

|  | C07D 91/48 |
· · · · | having one or more mercapto groups directly attached to the ring system

|  | C07D 91/50 |
· · · · | Naphthothiazoles

|  | C07D 91/52 |
· · · · | Thiazolo-pyrimidines

|  | C07D 91/54 |
· · | 1,2,3-thiadiazoles

|  | C07D 91/56 |
· · · | condensed with one or more other rings

|  | C07D 91/58 |
· · · · | 1,2,3-thiadiazolo-pyrimidines

|  | C07D 91/60 |
· · | 1,2,4-thiadiazoles

|  | C07D 91/62 |
· · | 1,3,4-Thiadiazoles

|  | C07D 91/64 |
· · · | condensed with one or more other rings

|  | C07D 91/66 |
· · · · | 1,3,4-thiadiazolo-pyrimidines

|  | C07D 91/68 |
· · | 1,2,5-thiadiazoles

|  | C07D 91/70 |
· · | Dithia(mon)azoles

|  | C07D 93/00 |
Heterocyclic compounds containing one or more rings each having the same structure and each consisting of 6 or more members, the members being 1 or more nitrogen atoms, 1 or more sulphur atoms, and 1 or more carbon atoms

|  | C07D 93/02 |
· | 1,2-thiazines

|  | C07D 93/04 |
· · | 1,4-sultams

|  | C07D 93/06 |
· | 1,3-thiazines

|  | C07D 93/08 |
· · | condensed with one or more other rings (cephalosporin Fulltext... Hierarchy... Expanded...C07D 99/24)

|  | C07D 93/10 |
· | 1,4-thiazines

|  | C07D 93/12 |
· · | condensed with one or more other rings

|  | C07D 93/14 |
· · · | Phenothiazines

|  | C07D 93/16 |
· · · | Monoazaphenothiazines

|  | C07D 93/18 |
· · · | Di- and poly-azaphenothiazines

|  | C07D 93/20 |
· | Dithia(mon)azines

|  | C07D 93/22 |
· | Thiadiazines

|  | C07D 93/24 |
· · | 1,2,6-thiadiazines

|  | C07D 93/26 |
· · | 1,3,5-thiadiaziens

|  | C07D 93/28 |
· · | condensed with one or more other rings

|  | C07D 93/30 |
· · · | Benzothiadiazines

|  | C07D 93/32 |
· · · · | Benzo-1,2,4-thiadiazines

|  | C07D 93/34 |
· · · · · | Sulphamyl benzo-1,2,4-thiadiazines

|  | C07D 93/36 |
· | containing rings consisting or 7 or more members

|  | C07D 93/38 |
· · | Thiazepines

|  | C07D 93/40 |
· · · | condensed with one or more other rings

|  | C07D 93/42 |
· · · · | Dibenzothiazepines

|  | C07D 93/44 |
· · | Thiazocines

|  | C07D 95/00 |
Heterocyclic compounds containing one or more rings each consisting of 1 or more oxygen atoms, 1 or more nitrogen atoms, 1 or more sulphur atoms, and 1 or more carbon atoms

|  | C07D 97/00 |
Heterocyclic compounds containing one or more rings each consisting of 1 or more selenium atoms and/or tellurium atoms in combination with 1 or more oxygen atoms and/or nitrogen atoms

|  | C07D 97/02 |
· | Selenazoles

|  | C07D 99/00 |
Heterocyclic compounds, not provided for elsewhere in sub-class Fulltext... Hierarchy... Expanded...C07D, having oxygen, nitrogen, sulphur, selenium, and tellurium in combinations of two or more different elements as the only hetero atoms (scopoline Fulltext... Hierarchy... Expanded...C07D 43/16; morphine Fulltext... Hierarchy... Expanded...C07D 43/32; strychnine Fulltext... Hierarchy... Expanded...C07D 43/34)

|  | C07D 99/02 |
· | containing different heterocyclic rings

|  | C07D 99/04 |
· · | with nitrogen and oxygen as the hetero atoms in different rings

|  | C07D 99/06 |
· · | with nitrogen and sulphur as the hetero atoms in different rings

|  | C07D 99/08 |
· · · | Biotin

|  | C07D 99/10 |
· · | in which at least one ring has nitrogen and sulphur together as hetero atoms and another ring has oxygen, nitrogen, or sulphur as the hetero atom

|  | C07D 99/12 |
· · · | Vitamin B1; Derivatives therof

|  | C07D 99/14 |
· · · | Penicillanic acids

|  | C07D 99/16 |
· · · · | Penicillins; Salts or derivatives thereof with inorganic bases

|  | C07D 99/18 |
· · · · · | Purification; Stabilisation

|  | C07D 99/20 |
· · · · · | Salts with organic bases

|  | C07D 99/22 |
· · · · · | Derivatives, e.g. halides, anhydrides, esters

|  | C07D 99/24 |
· · · | Cephalosporin C and derivatives thereof, e.g. 7-amino-cephalosporanic acid

|  | C07D 101/00 |
Steroids with a nuclear skeleton modified by having one or more heterocyclic rings in place of carbocyclic rings

|  | C07D 101/00 |
Steroids in which one or more of the carbocyclic rings of the basic skeleton have been replaced by heterocyclic rings

|  | C07D 103/00 - C07D 109/00 |
Heterocyclic compounds having elements other than oxygen, nitrogen, sulphur, selenium, and tellurium as the hetero atom or atoms

|  | C07D 103/00 |
Heterocyclic compounds containing one or more rings having an element of the 4th Group of the Periodic System as the hetero atom or atoms

|  | C07D 103/02 |
· | Silicon compounds

|  | C07D 103/04 |
· · | Cyclic esters of silicic acids

|  | C07D 105/00 |
Heterocyclic compounds containing one or more rings having an element of the 5th Group of the Periodic System as the hetero atom or atoms

|  | C07D 105/02 |
· | Phosphorus compounds

|  | C07D 105/04 |
· · | Cyclic esters of acids of phosphorus

|  | C07D 105/06 |
· | Arsenic compounds

|  | C07D 107/00 |
Other heterocyclic compounds

|  | C07D 107/02 |
· | Boron compounds

|  | C07D 109/00 |
Cyclic compounds having at least one ring containing no carbon

|  | C07D 109/02 |
· | containing boron in the ring

|  | C07D 109/04 |
· | containing silicon in the ring