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