5-Bromo-1H-pyrrolo[2,3-b]pyridine (5-Bromo-7-azaindole)

The 5-brominated derivative of 7-azaindole, providing a reactive handle for downstream Suzuki, Negishi, and Buchwald–Hartwig cross-coupling reactions in the synthesis of kinase-inhibitor and other azaindole-based pharmaceutical candidates.