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