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PCE
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DIFF Subgroup
C07D 205/02

not condensed with other rings

Introduced: July 1974

Full Title

Heterocyclic compounds containing four-membered rings with one nitrogen atom as the only ring hetero atom > not condensed with other rings

IPC and CPC are identically structured here. All 3 subcodes exist in both systems.

IPC defines codes here since 1974.

Child Classifications

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  • C07D 205/04 having no double bonds between ring members or between ring members and non-ring members since 1974 IPC+CPC Available in IPC and CPC
  • C07D 205/10 having two double bonds between ring members or between ring members and non-ring members since 1974 IPC+CPC Available in IPC and CPC