1-Phenyl-2-methyl-3-benzolsulfonamido-3-pyrazolin-5-on [German] Benzenesulfonamide, N-(2-methyl-5-oxo-1-phenyl-3-pyrazolin-3-yl)- DB2929500 N-(2-Methyl-5-oxo-1-phenyl-3-pyrazolin-3-yl)benzenesulfonamide