74592-97-5 Benzenesulfonic acid, 4-chloro-3-((1-(4-chlorophenyl)-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-4-yl)azo)-, potassium salt Benzenesulfonic acid, 4-chloro-3-((1-(p-chlorophenyl)-3-methyl-5-oxo-2-pyrazolin-4-yl)azo)-, monopotassium salt