2-Chloro-4-(2,5-dioxo-3-ethyl-3-methyl-1-pyrrolidinyl)benzenesulfonamide 33079-09-3 BRN 1549589 Benzenesulfonamide, 2-chloro-4-(2,5-dioxo-3-ethyl-3-methyl-1-pyrrolidinyl)- PB 427