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