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