DIFF Subgroup
A61K 31/365 Lactones
Introduced: July 1974
Full Title
Medicinal preparations containing organic active ingredients > Heterocyclic compounds > having oxygen as the only ring hetero atom, e.g. fungichromin > Lactones
IPC and CPC are identically structured here. All 2 subcodes exist in both systems.
IPC defines codes here since 1974.
Child Classifications
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- A61K 31/366 having six-membered rings, e.g. delta-lactones since 2000 IPC+CPC Available in IPC and CPC
- A61K 31/375 Ascorbic acid, i.e. vitamin C; Salts thereof since 1974 IPC+CPC Available in IPC and CPC