1-(4'-CARBOXYPHENYLAZO)-2-NAPHTHOL 32624-40-1 Benzoic acid, 4-((2-hydroxy-1-naphthalenyl)azo)- Benzoic acid, p-((2-hydroxy-1-naphthyl)azo)- p-((2-Hydroxy-1-naphthyl)azo)benzoic acid