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