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