DIFF Subgroup
A61K 31/235 having an aromatic ring attached to a carboxyl group
Introduced: July 1974
Full Title
Medicinal preparations containing organic active ingredients > Esters, e.g. nitroglycerine, selenocyanates > of carboxylic acids > having an aromatic ring attached to a carboxyl group
IPC and CPC are identically structured here. All 1 subcodes exist in both systems.
IPC defines codes here since 1974.
Child Classifications
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