Methyl 5-(chloromethyl)-3-cyano-4-(trifluoromethoxy)pyridine-2-acetate
Methyl 3-(chloromethyl)-5-cyano-2-(trifluoromethoxy)pyridine-4-acetate
2-Cyano-6-fluoro-4-(trifluoromethoxy)pyridine-3-sulfonyl chloride
2-Cyano-5-fluoro-6-(trifluoromethoxy)pyridine-3-sulfonyl chloride