Acting on D ring

Introduced: January 1980

Full Title

Preparation of steroids > Acting on D ring

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

IPC defines codes here since 1980.

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C12P 33/14 Hydroxylating at 16 position since 1980 IPC+CPC Available in IPC and CPC
C12P 33/16 Acting at 17 position since 1980 IPC+CPC Available in IPC and CPC