Used as a key intermediate in the synthesis of pharmaceutical compounds, particularly in the development of kinase inhibitors for cancer treatment. It serves as a building block in medicinal chemistry due to its ability to undergo cross-coupling reactions, enabling the formation of complex quinoline-based structures. Its bromine functionality allows for palladium-catalyzed reactions such as Suzuki or Buchwald-Hartwig aminations, making it valuable in drug discovery and optimization. Also employed in the preparation of fluorescent probes and dyes owing to the inherent photophysical properties of the quinoline core.