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