Benzenesulfonamide,p-(3-methyl-5-oxo-2-pyrazolin-1-yl)- (6CI,7CI); Benzenesulfonamide, p-(4,5-dihydro-3-methyl-5-oxo-1-pyrazolyl)-(4CI); 3-Methyl-1-(4-sulfamoylphenyl)-5-pyrazolone;3-Methyl-1-(p-sulfamylphenyl)-2-pyrazolin-5-one
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