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