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