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