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PCE
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DIFF Subgroup
C07D 239/24

having three or more double bonds between ring members or between ring members and non-ring members

Introduced: July 1974

Full Title

Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings > not condensed with other rings > having three or more double bonds between ring members or between ring members and non-ring members

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 239/26 with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to ring carbon atoms since 1974 IPC+CPC Available in IPC and CPC