?2-Hydroxy-5-bromopyridine (CAS NO.13466-38-1), its Synonyms are 5-Bromo-2-pyridinol ; 5-Bromo-2-pyridone;5-bromo-2-hydroxypyridine ; 5-Bromopyridin-2-ol ; 5-Bromo-2(1H)-pyridone ; 3-Bromo-6-hydroxypyridine . It is off-white to yellow-brown crystalline powder.