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