1H-Pyrazole-3-carboxylic acid, 4-((5-((5-chloro-2-fluoro-6-methyl-4-pyrimidinyl)amino)-2-sulfophenyl)azo)-1-(2,5-disulfophenyl)-4,5-dihydro-5-oxo-, sodium salt 4-((5-((5-Chloro-2-fluoro-6-methyl-4-pyrimidinyl)amino)-2-sulphophenyl)azo)-1-(2,5-disulphophenyl)-4,5-dihydro-5-oxo-1H-pyrazole-3-carboxylic acid, sodium salt 83399-93-3 EINECS 280-406-4