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