DIFF Subgroup
C09B 11/02 derived from diarylmethanes
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Diaryl- or triarylmethane dyes > derived from diarylmethanes
CPC:
Diaryl- or thriarylmethane dyes > derived from diarylmethanes
No child classifications to compare. This is a leaf node in both IPC and CPC.