IPC Subgroup
A61K 31/38 having sulfur as a ring hetero atom
Introduced: July 1974
Last revised: January 2006
Full Title
Medicinal preparations containing organic active ingredients > Heterocyclic compounds > having sulfur as a ring hetero atom
Classification Context
- Section:
- HUMAN NECESSITIES
- Class:
- MEDICAL OR VETERINARY SCIENCE; HYGIENE
- Subclass:
- PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
4 direct subcodes
Child Classifications
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- A61K 31/381 having five-membered rings
- A61K 31/382 having six-membered rings, e.g. thioxanthenes
- A61K 31/385 having two or more sulfur atoms in the same ring
- A61K 31/39 having oxygen atoms in the same ring