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