Methyl 6-(chloromethyl)-3-cyano-4-(trifluoromethoxy)pyridine-2-acetate
Methyl 2-(chloromethyl)-3-cyano-4-(trifluoromethoxy)pyridine-5-acetate
Ethyl 3-fluoro-5-(fluoromethyl)-4-(trifluoromethoxy)pyridine-2-carboxylate
Ethyl 5-fluoro-4-(fluoromethyl)-2-(trifluoromethoxy)pyridine-3-carboxylate