Used as a chiral building block in the synthesis of pharmaceuticals, particularly in the development of serotonin receptor agonists and antagonists. Its indole structure with a fluorine substituent makes it valuable for creating biologically active molecules with enhanced metabolic stability and receptor selectivity. Commonly employed in peptide-based drug design and in the preparation of intermediates for central nervous system agents. The Boc-protected amine allows for controlled stepwise synthesis in solid-phase or solution-phase peptide coupling reactions.