Used in organic synthesis as an intermediate for pharmaceuticals and biologically active compounds. Serves as a building block in the development of serotonin receptor modulators and other neuroactive agents. Commonly employed in cross-coupling reactions, such as Suzuki or Heck reactions, to construct complex indole derivatives with potential antitumor, antiviral, or anti-inflammatory properties. Also utilized in the synthesis of fluorescent probes and dyes due to the indole core’s favorable photophysical characteristics. Its bromo substituent allows for selective functionalization, making it valuable in medicinal chemistry research and drug discovery.