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