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