DIFF Subgroup
A61K 31/4353 ortho- or peri-condensed with heterocyclic ring systems
Introduced: January 2000
Full Title
Medicinal preparations containing organic active ingredients > Heterocyclic compounds > having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins > having six-membered rings with one nitrogen as the only ring hetero atom > ortho- or peri-condensed with heterocyclic ring systems
IPC and CPC are identically structured here. All 5 subcodes exist in both systems.
1 shared codes have differing titles between IPC and CPC.
IPC defines codes here since 2000.
Child Classifications
Navigate with arrow keys, Enter to open
- A61K 31/4355 the heterocyclic ring system containing a five-membered ring having oxygen as a ring hetero atom since 2000 IPC+CPC Available in IPC and CPC
- A61K 31/436 the heterocyclic ring system containing a six-membered ring having oxygen as a ring hetero atom, e.g. rapamycin since 2000 IPC+CPC Available in IPC and CPC
- A61K 31/4365 the heterocyclic ring system having sulfur as a ring hetero atom, e.g. ticlopidine since 2000 IPC+CPC Available in IPC and CPC
- A61K 31/437 the heterocyclic ring system containing a five-membered ring having nitrogen as a ring hetero atom, e.g. indolizine, beta-carboline since 2000 IPC+CPC Available in IPC and CPC
- A61K 31/4375 the heterocyclic ring system containing a six-membered ring having nitrogen as a ring heteroatom, e.g. quinolizines, naphthyridines, berberine, vincamine since 2000 IPC+CPC Available in IPC and CPC