DIFF Subgroup
A61K 31/40 having five-membered rings with one nitrogen as the only ring hetero atom, e.g. sulpiride, succinimide, tolmetin, buflomedil
Introduced: July 1974
Full Title
Medicinal preparations containing organic active ingredients > Heterocyclic compounds > having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins > having five-membered rings with one nitrogen as the only ring hetero atom, e.g. sulpiride, succinimide, tolmetin, buflomedil
IPC and CPC are identically structured here. All 7 subcodes exist in both systems.
3 shared codes have differing titles between IPC and CPC.
IPC defines codes here since 2000.
Child Classifications
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- A61K 31/401 Proline; Derivatives thereof, e.g. captopril since 2000 IPC+CPC Available in IPC and CPC
- A61K 31/4015 having oxo groups directly attached to the heterocyclic ring, e.g. piracetam, ethosuximide since 2000 IPC+CPC Available in IPC and CPC
- A61K 31/4025 not condensed and containing further heterocyclic rings, e.g. cromakalim since 2000 IPC+CPC Available in IPC and CPC
- A61K 31/403 condensed with carbocyclic rings, e.g. carbazole since 2000 IPC+CPC Available in IPC and CPC
- A61K 31/407 condensed with other heterocyclic ring systems, e.g. ketorolac, physostigmine since 2000 IPC+CPC Available in IPC and CPC
- A61K 31/409 having four such rings, e.g. porphine derivatives, bilirubin, biliverdine (hemin, hematin A61K31/555) since 2000 IPC+CPC Available in IPC and CPC