1-(4'-Sulfophenyl)-3-(4''-chlorphenyl)pyrazolin sodium salt 3021-22-5 Belophor Benzenesulfonic acid, 4-(3-(4-chlorophenyl)-4,5-dihydro-1H-pyrazol-1-yl)-, sodium salt Benzenesulfonic acid, p-(3-(p-chlorophenyl)-2-pyrazolin-1-yl)-, sodium salt Compound 47-3 p-(3-(p-Chlorophenyl)-2-pyrazolin-1-yl)benzenesulfonic acid sodium salt