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