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