CPC Subgroup
C09B 11/14 Preparation from aromatic aldehydes, aromatic carboxylic acids or derivatives thereof and aromatic amines
Full Title
Diaryl- or thriarylmethane dyes > derived from triarylmethanes > Amino derivatives of triarylmethanes > without any OH group bound to an aryl nucleus > Preparation from aromatic aldehydes, aromatic carboxylic acids or derivatives thereof and aromatic amines