IPC Subgroup
A61K 31/14 Quaternary ammonium compounds, e.g. edrophonium, choline
Introduced: July 1974
Last revised: January 2006
Full Title
Medicinal preparations containing organic active ingredients > Amines, e.g. amantadine > Quaternary ammonium compounds, e.g. edrophonium, choline
Classification Context
- Section:
- HUMAN NECESSITIES
- Class:
- MEDICAL OR VETERINARY SCIENCE; HYGIENE
- Subclass:
- PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES