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