Ethyl 5-bromo-3-hydroxy-4-(trifluoromethoxy)pyridine-2-carboxylate
3-Bromo-5-hydroxy-2-(trifluoromethoxy)pyridine-6-sulfonyl chloride
Ethyl 5-bromo-4-hydroxy-3-(trifluoromethoxy)pyridine-2-carboxylate
3-Bromo-2-hydroxy-6-(trifluoromethoxy)pyridine-4-sulfonyl chloride