4-Nitrobenzenesulfonic acid chloride 4-Nitrobenzenesulfonyl chloride 4-Nitrophenylsulfonyl chloride 98-74-8 Benzenesulfonyl chloride, 4-nitro- Benzenesulfonyl chloride, p-nitro- NSC13065 p-Nitrobenzenesulfonyl chloride p-Nitrophenylsulfonyl chloride