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