2-(Trifluoromethoxy)benzene-1-sulfonyl chloride103008-51-130 % similar 2,1,3-Benzoxadiazole-4-sulfonyl chloride114322-14-430 % similar 2,1,3-Benzothiadiazole-4-sulfonyl chloride73713-79-830 % similar 2-Cyanobenzenesulphonyl chloride69360-26-530 % similar