DIFF Main Group
C12P 17/00 Preparation of heterocyclic carbon compounds with only O, N, S, Se or Te as ring hetero atoms (C12P13/04 - C12P13/24 take precedence)
Introduced: January 1980
Title
Titles differ between systems:
IPC: Preparation of heterocyclic carbon compounds with only O, N, S, Se, or Te as ring hetero atoms
CPC: Preparation of heterocyclic carbon compounds with only O, N, S, Se or Te as ring hetero atoms (C12P13/04 - C12P13/24 take precedence)
Full Title
Full titles differ between systems:
IPC:
Preparation of heterocyclic carbon compounds with only O, N, S, Se, or Te as ring hetero atoms
CPC:
Preparation of heterocyclic carbon compounds with only O, N, S, Se or Te as ring hetero atoms (C12P13/04 - C12P13/24 take precedence)
IPC and CPC are identically structured here. All 5 subcodes exist in both systems.
IPC defines codes here since 1980.
Child Classifications
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- C12P 17/14 Nitrogen or oxygen as hetero atom and at least one other diverse hetero ring atom in the same ring since 1980 IPC+CPC Available in IPC and CPC
- C12P 17/18 containing at least two hetero rings condensed among themselves or condensed with a common carbocyclic ring system, e.g. rifamycin since 1980 +4 CPC IPC+CPC Available in IPC and CPC