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 in the preparation of bioactive molecules due to the indole scaffold, which is prevalent in many natural products and drugs. Commonly employed in medicinal chemistry for structure-activity relationship studies, especially in optimizing indole-based compounds for improved potency and selectivity. Also utilized in the production of agrochemicals and dyes where indole derivatives enhance functional performance.