|  | C |
SECTION C — CHEMISTRY AND METALLURGY

|  | C |
Note(s) Definitions for Section C: Alkali metals: Li, Na, K, Rb, Cs, Fr Alkaline earth metals: Ca, Sr, Ba, Ra Lanthanides: elements with atomic numbers 57 to 71 inclusive Rare earths: Sc, Y, Lanthanides Actinides: elements with atomic numbers 89 to 103 inclusive Refractory metals: Ti, V, Cr, Zr, Nb, Mo, Hf, Ta, W Halogens: F, Cl, Br, I, At Noble gases: He, Ne, Ar, Kr, Xe, Rn Platinum group: Os, Ir, Pt, Ru, Rh, Pd Noble metals: Ag, Au, Platinum group Light metals: alkali metals, alkaline earth metals, Be, Al, Mg Heavy metals: metals other than light metals Iron group: Fe, Co, Ni Non-metals: H, B, C, Si, N, P, O, S, Se, Te, noble gases, halogens Metals: elements other than non-metals Transition elements: elements with atomic numbers 21 to 30 inclusive, 39 to 48 inclusive, 57 to 80 inclusive, 89 upwards

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; fermentation or enzyme-using processes to synthesise a desired chemical compound Fulltext... Hierarchy... Expanded...C12P; production of organic compounds by electrolysis or electrophoresis Fulltext... Hierarchy... Expanded...C25B 3/00) [2]

|  | C07 |
Note(s) Anhydrides and halides of carboxylic acids are classified as the relevant acids unless otherwise indicated. 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 malonate is classified as malonic acid (in Fulltext... Hierarchy... Expanded...C07C 55/08), 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 sub-class Fulltext... Hierarchy... Expanded...C07C and not in sub-class 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 39/235 or Fulltext... Hierarchy... Expanded...C07C 39/44. Salts or adducts formed between two or more organic compounds are classified according to all compounds forming the salts or adducts. [2] In the absence of an indication to the contrary, and with the exception referred to below, a compound is classified in the last appropriate place, e.g. a compound containing an acyclic chain and a heterocyclic ring is classified only as a heterocyclic compound, and a steroid 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 59/58, Fulltext... Hierarchy... Expanded...C07C 59/70), 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 chemical compounds and their preparation are classified in the groups for the type of compound prepared. The processes of preparation should be secondarily classified in the groups for the types of reaction employed when such groups exist. General processes for the preparation of a class of compounds falling into more than one main group are classified in the groups for the processes employed when such groups exist. The compounds prepared may be secondarily classified in the groups for the types of compounds prepared.

|  | 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; enzymes Fulltext... Hierarchy... Expanded...C12N 9/00, Fulltext... Hierarchy... Expanded...C12N 11/00) [2]

|  | C07G 7/02 - C07G 7/03 |
( transferred to Fulltext... Hierarchy... Expanded...C12N 9/00, Fulltext... Hierarchy... Expanded...C12N 11/00 )

|  | 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 K1Fulltext... Hierarchy... Expanded...C07C 50/14; pantothenic acid Fulltext... Hierarchy... Expanded...C07C 103/50; vitamins of the D group Fulltext... Hierarchy... Expanded...C07C 172/00; vitamin A Fulltext... Hierarchy... Expanded...C07C 175/00; pyridoxal, pyridoxamin Fulltext... Hierarchy... Expanded...C07D 213/66; pyridoxin Fulltext... Hierarchy... Expanded...C07D 213/67; vitamin C Fulltext... Hierarchy... Expanded...C07D 307/62; tocopherols Fulltext... Hierarchy... Expanded...C07D 311/72; lipoic acid Fulltext... Hierarchy... Expanded...C07D 339/04; vitamin B1Fulltext... Hierarchy... Expanded...C07D 415/00; riboflavin Fulltext... Hierarchy... Expanded...C07D 487/04; biotin Fulltext... Hierarchy... Expanded...C07D 495/04; sideramines, corresponding desferri compounds Fulltext... Hierarchy... Expanded...C07F 15/03; vitamin B12Fulltext... Hierarchy... Expanded...C07H 23/00)

|  | C07G 15/00 |
Hormones

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