6-(3,6-DICHLOROPYRIDAZINE-4-CARBOXAMIDO)-4-HYDROXY-3-((P-SULFOPHENYL)AZO)NAPHTHALENE-2-SULFONIC ACID
6-(3,6-dichloropyridazine-4-carboxamido)-4-hydroxy-3-((p-sulfophenyl)azo)naphthalene-2-sulfonic acid