DIFF Subgroup
A61K 31/34 having five-membered rings with one oxygen as the only ring hetero atom, e.g. isosorbide
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 five-membered rings with one oxygen as the only ring hetero atom, e.g. isosorbide
IPC and CPC are identically structured here. All 3 subcodes exist in both systems.
1 shared codes have differing titles between IPC and CPC.
IPC defines codes here since 1974.
Child Classifications
Navigate with arrow keys, Enter to open
- A61K 31/341 not condensed with another ring, e.g. ranitidine, furosemide, bufetolol, muscarine since 2000 IPC+CPC Available in IPC and CPC
- A61K 31/343 condensed with a carbocyclic ring, e.g. coumaran, bufuralol, befunolol, clobenfurol, amiodarone since 2000 IPC+CPC Available in IPC and CPC