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