2,7-Naphthalenedisulfonic acid, 4-amino-3-((5-((5-chloro-6-methyl-2-(methylsulfonyl)-4-pyrimidinyl)amino)-2-sulfophenyl)azo)-6-((2,5-disulfophenyl)azo)-5-hydroxy-, potassium sodium salt 4-Amino-3-((5-((5-chloro-4-methyl-2-methylsulfonyl-6-pyrimidyl)amino)-2-sulfophenyl)azo)-5-hydroxy-6-((2,5-disulfophenyl)azo)-2,7-naphthalene-disulfonic acid, sodium potassium salt 4-Amino-3-((5-((5-chloro-6-methyl-2-(methylsulphonyl)-4-pyrimidinyl)amino)-2-sulphophenyl)azo)-6-((2,5-disulphophenyl)azo)-5-hydroxynaphthalene-2,7-disulphonic acid, potassium sodium salt 72828-72-9 EINECS 276-884-9