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PCE
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DIFF Subgroup
C07C 13/275

the twelve-membered ring being unsaturated

Introduced: January 1980

Full Title

Cyclic hydrocarbons containing rings other than, or in addition to, six-membered aromatic rings > Monocyclic hydrocarbons or acyclic hydrocarbon derivatives thereof > with a twelve-membered ring > the twelve-membered ring being unsaturated

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

IPC defines codes here since 1980.

Child Classifications

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  • C07C 13/277 with a cyclododecatriene ring since 1980 IPC+CPC Available in IPC and CPC