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