4-((5-(Benzoylamino)-2-sulfophenyl)azo)-1-(2-chlorophenyl)-3-methyl-2-pyrazolin-5-one, potassium salt 68444-07-5 Benzenesulfonic acid, 4-(benzoylamino)-2-((1-(2-chlorophenyl)-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-4-yl)azo)-, monopotassium salt EINECS 270-578-9 Potassium 4-benzamido-2-((1-(2-chlorophenyl)-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-4-yl)azo)benzenesulphonate