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