Skip to content
PCE
Search Classifications
Search for IPC and CPC classification codes or keywords
DIFF Subgroup
C07D 239/20

having two 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 two double bonds between ring members or between ring members and non-ring members

IPC and CPC are identically structured here. All 1 subcodes exist in both systems.

IPC defines codes here since 1974.

Child Classifications

Navigate with arrow keys, Enter to open

  • C07D 239/22 with hetero atoms directly attached to ring carbon atoms since 1974 IPC+CPC Available in IPC and CPC