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