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