Not less than-95.0%
4-(3-(3-Fluorophenyl)-5,5-dimethyl-4-oxo-4,5-dihydrofuran-2-yl)benzenesulfonamide; 4-[3-(3-Fluorophenyl)-4,5-dihydro-5,5-dimethyl-4-oxo-2-furanyl]benzenesulfonamide