CPC Subgroup
C09B 43/20 with monocarboxylic acids, carbamic acid esters or halides, mono- isocyanates or haloformic acid esters
Full Title
Preparation of azo dyes from other azo compounds > by acylation of hydroxyl group > with monocarboxylic acids, carbamic acid esters or halides, mono- isocyanates or haloformic acid esters
5 direct subcodes
Child Classifications
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- C09B 43/22 having the carboxylic group directly attached to an aromatic carbocyclic ring