Steroids in which the cyclopenta(a)hydrophenanthrene skeleton is condensed with a heterocyclic ring (spiro-condensed heterocyclic rings C07J21/00, C07J33/00, C07J43/00)

Introduced: July 1974

Title

Titles differ between systems:

IPC: Steroids in which the cyclopenta[a]hydrophenanthrene skeleton is condensed with a heterocyclic ring

CPC: Steroids in which the cyclopenta(a)hydrophenanthrene skeleton is condensed with a heterocyclic ring (spiro-condensed heterocyclic rings C07J21/00, C07J33/00, C07J43/00)

Full Title

Full titles differ between systems:

IPC:

Steroids in which the cyclopenta[a]hydrophenanthrene skeleton is condensed with a heterocyclic ring

CPC:

Steroids in which the cyclopenta(a)hydrophenanthrene skeleton is condensed with a heterocyclic ring (spiro-condensed heterocyclic rings C07J21/00, C07J33/00, C07J43/00)

Of 3 combined children, 0 exist in both systems.

3 codes are CPC-only extensions.

Child Classifications

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C07J 71/0005 +2 CPC CPC only CPC only
C07J 71/0036 +2 CPC CPC only CPC only
C07J 71/0073 +3 CPC CPC only CPC only