?4-Nitrobenzenesulfonyl chloride (CAS NO.98-74-8)?is also named as 4-Nitrobenzenesulfonic acid chloride ; 4-Nitrophenylsulfonyl chloride ; AI3-52248 ;?NSC 13065 ; p-Nitrobenzenesulfonyl chloride ; p-Nitrophenylsulfonyl chloride .?4-Nitrobenzenesulfonyl chloride (CAS NO.98-74-8) is yellow to brown powder.