68992-04-1 Benzenesulfonic acid, 2-((5-(aminocarbonyl)-1,6-dihydro-2-hydroxy-4-methyl-6-oxo-1-(2-(4-sulfophenyl)ethyl)-3-pyridinyl)azo)-5-((3-phosphonophenyl)azo)-, disodium salt Disodium 2-((5-carbamoyl-1,6-dihydro-2-hydroxy-4-methyl-6-oxo-1-(2-(4-sulphonatophenyl)ethyl)-3-pyridyl)azo)-5-((3-phosphonophenyl)azo)benzenesulphonate EINECS 273-669-1