DIFF Subgroup
A61K 31/35 having six-membered rings with one oxygen as the only ring hetero atom
Introduced: July 1974
Full Title
Medicinal preparations containing organic active ingredients > Heterocyclic compounds > having oxygen as the only ring hetero atom, e.g. fungichromin > having six-membered rings with one oxygen as the only ring hetero atom
IPC and CPC are identically structured here. All 2 subcodes exist in both systems.
1 shared codes have differing titles between IPC and CPC.
IPC defines codes here since 2000.
Child Classifications
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- A61K 31/352 condensed with carbocyclic rings, e.g. methantheline since 2000 IPC+CPC Available in IPC and CPC