|  | 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.

|  | C07G |
COMPOUNDS OF UNKNOWN CONSTITUTION

|  | C07G 1/00 |
Lignin; Lignin derivatives

|  | C07G 3/00 |
Glycosides (polysaccharides Fulltext... Hierarchy... Expanded...C08B)

|  | C07G 5/00 |
Alkaloids

|  | C07G 7/00 |
Proteins; Albumens; Nucleoproteins; Degradation products of proteins (foodstuffs Fulltext... Hierarchy... Expanded...A23)

|  | C07G 7/02 |
· | Enzymes

|  | C07G 7/022 |
· · | extraction from plants

|  | C07G 7/024 |
· · · | from malt

|  | C07G 7/026 |
· · | extraction from animal material

|  | C07G 7/028 |
· · | extraction from micro-organisms

|  | C07G 7/03 |
· · · | from yeast

|  | C07G 7/04 |
· | Metal compounds

|  | C07G 7/06 |
· · | of keratin or its degradation products

|  | C07G 9/00 |
Ichthyol

|  | C07G 11/00 |
Antibiotics

|  | C07G 13/00 |
Vitamins (vitamin K Fulltext... Hierarchy... Expanded...C07C 49/66; pantothenic acid Fulltext... Hierarchy... Expanded...C07C 103/50; vitamins of the D group Fulltext... Hierarchy... Expanded...C07C 171/10; vitamin A Fulltext... Hierarchy... Expanded...C07C 175/00; vitamin C Fulltext... Hierarchy... Expanded...C07D 5/12; tocopherols Fulltext... Hierarchy... Expanded...C07D 7/22; pyridoxin Fulltext... Hierarchy... Expanded...C07D 31/30; pyridoxal Fulltext... Hierarchy... Expanded...C07D 31/32; pyridoxamin Fulltext... Hierarchy... Expanded...C07D 31/42; vitamin B12Fulltext... Hierarchy... Expanded...C07D 55/62; riboflavin Fulltext... Hierarchy... Expanded...C07D 57/32; lipoic acid, derivatives thereof Fulltext... Hierarchy... Expanded...C07D 71/04; biotin Fulltext... Hierarchy... Expanded...C07D 99/08; vitamin B 1 Fulltext... Hierarchy... Expanded...C07D 99/12; sideramines, corresponding desferri compounds Fulltext... Hierarchy... Expanded...C07F 15/03)

|  | C07G 15/00 |
Hormones

|  | C07G 17/00 |
Other compounds of unknown constitution