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