4-Cyano-6-methyl-2-(trifluoromethoxy)pyridine-3-sulfonyl chloride
4-Cyano-2-methyl-5-(trifluoromethoxy)pyridine-3-sulfonyl chloride
4-(Chloromethyl)-3-cyano-2-iodo-5-(trifluoromethoxy)pyridine
5-Cyano-3-methyl-2-(trifluoromethoxy)pyridine-4-sulfonyl chloride