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