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