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