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