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

2,5-Dichloro-4-[[4,5-dihydro-3-methyl-4-[[4-[[(4-methylphenyl)sulfonyl](phenylmethyl)amino]phenyl]azo]-5-oxo-1H-pyrazol]-1-yl]benzenesulfonic acid sodium salt

Benzenesulfonic acid, 2,5-dichloro-4-[4,5-dihydro-3-methyl-4-[[4-[[(4-methylphenyl)sulfonyl](phenylmethyl)amino] phenyl]azo]-5-oxo-1H-pyrazol-1-yl]-, sodium salt