2,7-Naphthalenedisulfonic acid, 5-((5-chloro-2-fluoro-6-methyl-4-pyrimidinyl)amino)-4-hydroxy-3-((4-methyl-2-sulfophenyl)azo)-, sodium salt 5-((5-Chloro-2-fluoro-6-methyl-4-pyrimidinyl)amino)-4-hydroxy-3-((4-methyl-2-sulphophenyl)azo)naphthalene-2,7-disulphonic acid, sodium salt 83400-18-4 EINECS 280-434-7