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