DIFF Subgroup
C09B 31/14 Heterocyclic components
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Disazo or polyazo dyes of the type A → B → C, A → B → C → D, or the like, prepared by diazotising and coupling > Disazo dyes > from other coupling components "C" > Heterocyclic components
CPC:
Disazo and polyazo dyes of the type A->B->C, A->B->C->D, or the like, prepared by diazotising and coupling > Disazo dyes > from other coupling components "C" > Heterocyclic components
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 1980.
Child Classifications
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- C09B 31/153 containing a six-membered ring with one nitrogen atom as the only ring hetero-atom since 1980 IPC+CPC Available in IPC and CPC