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