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