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PCE
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DIFF Subgroup
A61K 31/44

Non condensed pyridines; Hydrogenated derivatives thereof

Introduced: July 1974

Title

Titles differ between systems:

IPC: Non-condensed pyridines; Hydrogenated derivatives thereof

CPC: Non condensed pyridines; Hydrogenated derivatives thereof

Full Title

Full titles differ between systems:

IPC:

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 > Non-condensed pyridines; Hydrogenated derivatives thereof

CPC:

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 > Non condensed pyridines; Hydrogenated derivatives thereof

IPC and CPC are identically structured here. All 11 subcodes exist in both systems.

5 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 1974.

Child Classifications

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  • A61K 31/4402 only substituted in position 2, e.g. pheniramine, bisacodyl since 2000 IPC+CPC Available in IPC and CPC
  • A61K 31/4406 only substituted in position 3, e.g. zimeldine (nicotinic acid A61K31/455) since 2000 IPC+CPC Available in IPC and CPC
  • A61K 31/4409 only substituted in position 4, e.g. isoniazid, iproniazid since 2000 IPC+CPC Available in IPC and CPC
  • A61K 31/4412 having oxo groups directly attached to the heterocyclic ring since 2000 IPC+CPC Available in IPC and CPC
  • A61K 31/4415 Pyridoxine, i.e. Vitamin B6 (pyridoxal phosphate A61K31/675) since 2000 IPC+CPC Available in IPC and CPC
  • A61K 31/4418 having a carbocyclic group directly attached to the heterocyclic ring, e.g. cyproheptadine since 2000 IPC+CPC Available in IPC and CPC
  • A61K 31/4422 1,4-Dihydropyridines, e.g. nifedipine, nicardipine since 2000 IPC+CPC Available in IPC and CPC
  • A61K 31/4425 Pyridinium derivatives, e.g. pralidoxime, pyridostigmine since 2000 IPC+CPC Available in IPC and CPC
  • A61K 31/455 Nicotinic acids, e.g. niacin; Derivatives thereof, e.g. esters, amides since 1974 IPC+CPC Available in IPC and CPC