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