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