4-chloro-3-[4-[[4-[4-[[1-(2-chloro-5-sulfophenyl)-3-methyl-5-oxo-4h-pyrazol-4-yl]diazenyl]-2-methylphenyl]-3-methylphenyl]diazenyl]-3-methyl-5-oxo-4h-pyrazol-1-yl]benzenesulfonic Acid
CAS No. 93917-95-4