Used as a key intermediate in the synthesis of pharmaceutical peptides, particularly in the production of serotonin receptor modulators and migraine treatment drugs. Its indole structure mimics tryptophan, making it valuable in creating biologically active peptides with enhanced stability and receptor selectivity. Commonly employed in solid-phase peptide synthesis where the Boc protecting group allows for controlled stepwise assembly. Also utilized in research settings to develop novel neuroactive compounds and probe receptor binding mechanisms.