IPC Subgroup
A61K 31/554 having at least one nitrogen and at least one sulfur as ring hetero atoms, e.g. clothiapine, diltiazem
Introduced: January 2000
Last revised: January 2006
Full Title
Medicinal preparations containing organic active ingredients > Heterocyclic compounds > having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins > having seven-membered rings, e.g. azelastine, pentylenetetrazole > having at least one nitrogen and at least one sulfur as ring hetero atoms, e.g. clothiapine, diltiazem
Classification Context
- Section:
- HUMAN NECESSITIES
- Class:
- MEDICAL OR VETERINARY SCIENCE; HYGIENE
- Subclass:
- PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES