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