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