Benzenesulfonic acid, 3-[2-(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)diazenyl]-4-hydroxy-5-nitro-
3-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-4-hydroxy-5-nitrobenzenesulphonic acid
CAS: 24041-30-3
Molecular Formula: C16H13N5O7S