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