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