3-Chloro-5-cyano-4-(trifluoromethoxy)pyridine-2-sulfonyl chloride
5-Chloro-4-cyano-2-(trifluoromethoxy)pyridine-3-sulfonyl chloride
5-Chloro-4-iodo-3-methoxy-2-(trifluoromethoxy)pyridine
5-Chloro-3-(fluoromethyl)-2-(trifluoromethoxy)pyridine-4-acetonitrile