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