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