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PCE
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DIFF Subgroup
A61K 31/415

1,2-Diazoles

Introduced: July 1974

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 five-membered rings with two or more ring hetero atoms, at least one of which is nitrogen, e.g. tetrazole > 1,2-Diazoles

CPC:

Medicinal preparations containing organic active ingredients > Heterocyclic compounds > having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins > having five-membered rings with two or more ring hetero atoms, at least one of which being nitrogen, e.g. tetrazole > 1,2-Diazoles

IPC and CPC are identically structured here. All 4 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 31/4152 having oxo groups directly attached to the heterocyclic ring, e.g. antipyrine, phenylbutazone, sulfinpyrazone since 2000 IPC+CPC Available in IPC and CPC
  • A61K 31/4155 non condensed and containing further heterocyclic rings since 2000 IPC+CPC Available in IPC and CPC
  • A61K 31/416 condensed with carbocyclic ring systems, e.g. indazole since 2000 IPC+CPC Available in IPC and CPC
  • A61K 31/4162 condensed with heterocyclic ring systems since 2000 IPC+CPC Available in IPC and CPC