4-(2-(3-(4-Nitrophenyl)-5-oxo-1-phenyl-1,5-dihydro-4H-pyrazol-4-ylidene)hydrazineyl)benzenesulfonic acid dihydrate 50mg

4-(2-(3-(4-Nitrophenyl)-5-oxo-1-phenyl-1,5-dihydro-4H-pyrazol-4-ylidene)hydrazineyl)benzenesulfonic acid dihydrate 50mg