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