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