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