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