having one double bond between ring members or between a ring member and a non-ring member

Introduced: July 1974

Full Title

Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom > with only hydrogen or carbon atoms directly attached to the ring nitrogen atom > having one double bond between ring members or between a ring member and a non-ring member

IPC and CPC are identically structured here. All 2 subcodes exist in both systems.

IPC defines codes here since 1974.

Child Classifications

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C07D 207/20 with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to ring carbon atoms since 1974 IPC+CPC Available in IPC and CPC
C07D 207/22 with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms since 1974 IPC+CPC Available in IPC and CPC