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