36898-42-7 4-(2,5-Dihydro-2,5-dioxo-1H-pyrrol-1-yl)benzenesulfonyl chloride Benzenesulfonyl chloride, 4-(2,5-dihydro-2,5-dioxo-1H-pyrrol-1-yl)- EINECS 253-265-1 p-(2,5-Dihydro-2,5-dioxo-1H-pyrrol-1-yl)benzenesulphonyl chloride