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