1,2-Dimethyl-4-(p-carboxyphenylazo)-5-hydroxybenzene 3810-51-3 AI3-50895 Benzoic acid, 4-((2-hydroxy-4,5-dimethylphenyl)azo)- Benzoic acid, p-((6-hydroxy-3,4-xylyl)azo)- NSC 1576