Used as a key intermediate in the synthesis of pharmaceuticals, particularly in the development of central nervous system agents and antidepressants. It serves as a building block for modifying bioactive molecules due to its bifunctional structure, allowing attachment to other molecular frameworks. Commonly employed in research settings for designing enzyme inhibitors and receptor ligands. Also utilized in the preparation of fluorescent probes and labeling reagents in biochemical assays. Its hydrochloride salt form enhances solubility and stability, making it suitable for use in aqueous reaction systems.