IPC Subgroup
A61K 31/59 Compounds containing 9,10-seco-cyclopenta[a]hydro- phenanthrene ring systems
Introduced: July 1974
Last revised: January 2006
Full Title
Medicinal preparations containing organic active ingredients > Compounds containing 9,10-seco-cyclopenta[a]hydro- phenanthrene ring systems
Classification Context
- Section:
- HUMAN NECESSITIES
- Class:
- MEDICAL OR VETERINARY SCIENCE; HYGIENE
- Subclass:
- PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
2 direct subcodes
Child Classifications
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- A61K 31/592 9,10-Secoergostane derivatives, e.g. ergocalciferol, vitamin D
- A61K 31/593 9,10-Secocholestane derivatives, e.g. cholecalciferol, vitamin D