12237-97-7 2-Naphthalenesulfonic acid, 7-((4-chloro-6-((3-sulfophenyl)amino)-1,3,5-triazin-2-yl)methylamino)-4-hydroxy-3-((2-sulfophenyl)azo)-, trisodium salt 70210-21-8 EINECS 274-418-9 Trisodium 7-((4-chloro-6-((3-sulphonatophenyl)amino)-1,3,5-triazin-2-yl)methylamino)-4-hydroxy-3-((2-sulphonatophenyl)azo)naphthalene-2-sulphonate