Used in pharmaceutical research as a protected intermediate in the synthesis of indole-based bioactive compounds. The tert-butoxycarbonyl (Boc) group stabilizes the amine during peptide coupling or alkylation reactions, allowing selective modification of the indole scaffold. Commonly applied in the development of serotonin receptor ligands, tryptamine derivatives, and analogs for neurological disorder studies. Its protection strategy enables high yield and purity in solid-phase and solution-phase syntheses.