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