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