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