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