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