DIFF Subgroup
C09B 33/12 in which the coupling component is a heterocyclic compound
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Disazo or polyazo dyes of the types A → K ← B, A → B → K ← C, or the like, prepared by diazotising and coupling > Disazo dyes > in which the coupling component is a heterocyclic compound
CPC:
Disazo and polyazo dyes of the types A->K<-B, A->B->K<-C, or the like, prepared by diazotising and coupling > Disazo dyes > in which the coupling component is a heterocyclic compound
Of 1 combined children, 0 exist in both systems.
1 codes exist only in IPC.
IPC defines codes here since 1980.
Child Classifications
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