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