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