Used in organic synthesis as an intermediate for pharmaceuticals and bioactive compounds. Its structure supports the development of indole-based derivatives, which are common in medicinal chemistry. Commonly employed in the preparation of tryptamine and tryptophan analogs, it plays a role in synthesizing serotonin receptor modulators and other neuroactive agents. Also utilized in the creation of fluorescent probes and dyes due to the indole core’s photophysical properties. Serves as a building block in the synthesis of natural product analogs and kinase inhibitors in cancer research.