1,4-Benzenedisulfonic acid, 2-(4-((4-((5-chloro-2,6-difluoro-4-pyrimidinyl)amino)phenyl)azo)-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl)-, disodium salt 72139-22-1 Disodium 2-(4-((4-((5-chloro-2,6-difluoropyrimidin-4-yl)amino)phenyl)azo)-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl)benzene-1,4-disulphonate EINECS 276-378-8