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