Synonyms: 1,3,5-Naphthalenetrisulfonic acid, 7-(2-(4-amino-2-((5-chloro-6-methyl-2-(methylsulfonyl)-4-pyrimidinyl)amino)-5-sulfophenyl)diazenyl)-, sodium salt (1:?);7-((2-((5-Chloro-4-methyl-2-(methylsulfonyl)-6-pyrimidiyl)amino)-4-amino-5-sulfophenyl)azo)-1,3,5-naphthalenetrisulfonic acid, sodium salt;1,3,5-Naphthalenetrisulfonic acid, 7-((4-amino-2-((5-chloro-6-methyl-2-(methylsulfonyl)-4-pyrimidinyl)amino)-5-sulfophenyl)azo)-, sodium salt;7-((4-Amino-2-((5-chloro-6-methyl-2-(methylsulphonyl)-4-pyrimidinyl)amino)-5-sulphophenyl)azo)naphthalene-1,3,5-trisulphonate acid, sodium salt;tetrasodium 7-[(E)-(4-amino-2-{[5-chloro-6-methyl-2-(methylsulfonyl)pyrimidin-4-yl]amino}-5-sulfonatophenyl)diazenyl]naphthalene-1,3,5-trisulfonate