Used as a key intermediate in the synthesis of pharmaceuticals, particularly in the development of serotonin receptor modulators and other central nervous system agents. It serves as a building block for indole-based compounds with potential biological activity, including anti-inflammatory, antiviral, and anticancer properties. Commonly employed in medicinal chemistry for structure-activity relationship studies due to its ability to mimic natural indole alkaloid structures. Also utilized in the preparation of fluorescent probes and dyes for biochemical imaging applications.