2-Chloro-4-(2,5-dioxo-3-methyl-3-phenyl-1-pyrrolidinyl)benzenesulfonamide 30279-21-1 BRN 1554253 Benzenesulfonamide, 2-chloro-4-(2,5-dioxo-3-methyl-3-phenyl-1-pyrrolidinyl)- PB 437