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IPC Subgroup
A61K 31/551

having two nitrogens as ring hetero atoms, e.g. clozapine, dilazep

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 two nitrogens as ring hetero atoms, e.g. clozapine, dilazep

Classification Context

Section:
HUMAN NECESSITIES
Class:
MEDICAL OR VETERINARY SCIENCE; HYGIENE
Subclass:
PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES

1 direct subcode

Child Classifications

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