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