sodium 4-[(5-amino-3-methyl-1-phenyl-1H-pyrazol-4-yl)azo]-2,5-dichlorobenzenesulphonate

4-[(5-Amino-3-methyl-1-phenyl-1H-pyrazol-4-yl)azo]-2,5-dichlorobenzenesulfonic acid sodium salt

Benzenesulfonic acid, 4-(5-amino-3-methyl-1-phenyl-1H-pyrazol-4-yl)azo-2,5-dichloro-, monosodium salt