6-Bromo-3-hydroxy-2-(trifluoromethoxy)pyridine-4-sulfonyl chloride
6-(Aminomethyl)-4-bromo-2-(trifluoromethoxy)pyridine-3-carboxylic acid
2-Bromo-5-hydroxy-3-(trifluoromethoxy)pyridine-6-sulfonyl chloride
2-Bromo-4-hydroxy-6-(trifluoromethoxy)pyridine-3-sulfonyl chloride