2-Hydroxy-5-((4-(((3-methyl-2-pyridinyl)amino)sulfonyl)phenyl)azo)benzoic acid 42753-53-7 BENZOIC ACID, 2-HYDROXY-5-((4-(((3-METHYL-2-PYRIDINYL)AMINO)SULFONYL)PHENYL)AZO) BRN 0459871 Benzoic acid, 2-hydroxy-5-((4-(((3-methyl-2-pyridinyl)amino)sulfonyl)phenyl)azo)- CH 74A Methylsulfasalazine