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