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METHYL RED, PARA 4-Dimethylaminophenylazo-benzoic acid P-(P-DIMETHYLAMINOPHENYL-AZO)*BENZOIC AC ID, SODIUM 4-(4-DIMETHYLAMINOPHENYLAZO)BENZOIC ACID SODIUM SALT P-(P-DIMETHYLAMINOPHENYLAZO)BENZOIC ACID SODIUM SALT 4-[[4-(dimethylamino)phenyl]azo]-benzoicacisodiumsalt 4-(4-DIMETHYLAMINOPHENYLAZO)BENZOIC ACID SODIUM SALT 98% 4-(4-Dimethylaminophenylazo)benzoic acid sodium salt,98%,pure 4-(4-Dimethylaminophenylazo)benzoic acid sodium salt, pure, 98% 4-(4-Dimethylaminophenylazo)benzoic acid sodium salt, indicator grade