2-Naphthalenesulfonic acid, 7-((4-aminobenzoyl)amino)-4-hydroxy-3-((2-methoxy-5-methylphenyl)azo)-, monosodium salt 2-Naphthalenesulfonic acid, 7-(4-aminobenzoylamino)-4-hydroxy-3-((2-methoxy-5-methylphenyl)azo)-, sodium salt 67990-26-5