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