1H-Naphth(1,2-d)imidazole-7-sulfonic acid, 8-((5-(benzoylamino)-2-sulfophenyl)azo)-1-((2-chlorophenyl)amino)-9-hydroxy-2-pentyl-, disodium salt 75268-67-6 Disodium 8-((5-(benzoylamino)-2-sulphonatophenyl)azo)-1-((2-chlorophenyl)amino)-9-hydroxy-2-pentyl-1H-naphth(1,2-d)imidazole-7-sulphonate EINECS 278-156-6