27766-45-6 4-(Phenylcarboxamido)-2,5-dimethoxybenzenediazonium chloride 4-Benzoylamino-2,5-dimethoxybenzenediazonium Benzenediazonium, 4-(benzoylamino)-2,5-dimethoxy- Benzenediazonium, 4-benzamido-2,5-dimethoxy- EINECS 248-646-4 Fast Blue BR diazonium salt Fast Blue RR Fast Blue RR Salt