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