3-Chloro-4-iodo-5-(trifluoromethoxy)pyridine-2-sulfonyl chloride
3-Chloro-2-iodo-6-(trifluoromethoxy)pyridine-5-sulfonyl chloride
4-Chloro-2-cyano-3-(trifluoromethoxy)pyridine-6-sulfonyl chloride
3-Chloro-5-cyano-6-(trifluoromethoxy)pyridine-2-sulfonyl chloride