4-((4-(dimethylamino)phenyl)azo)benzoic acid ; dabcyl ; dabcyl acid ; 4'-(dimethylamino)-4-azobenzenecarboxylic acid ; para methyl red ; 4-dimethylaminoazobenzene-4'-carboxylic acid ; 4-(4-dimethylaminophenyl)diazenylbenzoic acid ; p-methyl red ; p-methyl red
para methyl red