63899-00-3

3-[4,5-dihydro-3-methyl-4-[(4-methyl-2-nitrophenyl)azo]-5-oxo-1H-pyrazol-1-yl]benzenesulphonamide 3-[[4,5-Dihydro-3-methyl-4-[(4-methyl-2-nitrophenyl)azo]-5-oxo-1H-pyrazol]-1-yl]benzenesulfonamide Benzenesulfonamide, 3-[4,5-dihydro-3-methyl-4-[2-(4-methyl-2-nitrophenyl)diazenyl]-5-oxo-1H-pyrazol-1-yl]-