1,3,5-Naphthalenetrisulfonic acid, 7-((4-amino-2-((5-chloro-2-fluoro-6-methyl-4-pyrimidinyl)amino)-5-sulfophenyl)azo)-, tetrasodium salt 3-((2-((5-Chloro-2-fluoro-4-methylpyrimidin-6-yl)amino)-4-amino-5-sulfophenyl)azo)-1,5,7-naphthalenetrisulfonic acid, tetrasodium salt 75198-88-8