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