CPC Subgroup
C09B 43/24 with formation of —O—SO2—R or —O—SO3H radicals
Full Title
Preparation of azo dyes from other azo compounds > by acylation of hydroxyl group > with formation of —O—SO2—R or —O—SO3H radicals
C09B 43/24 Preparation of azo dyes from other azo compounds > by acylation of hydroxyl group > with formation of —O—SO2—R or —O—SO3H radicals