2-Chloro-4-bromo-benzenesulfonyl chloride (CAS NO.351003-52-6) is also called as 4-Bromo-2-chlorobenzenesulphonyl chloride 97% ; 4-Bromo-2-chlorobenzene-1-sulfonyl chloride ; 4-Bromo-2-chlorobenzenesulfonyl chloride,97% .