Used as a key intermediate in the synthesis of pharmaceuticals, particularly in the production of active pharmaceutical ingredients (APIs) for antidepressants and antiviral drugs. It serves as a chiral building block in organic synthesis, enabling the construction of complex nitrogen-containing heterocycles. Its hydrochloride salt form enhances stability and solubility, making it suitable for use in aqueous reaction conditions. Also employed in the development of agrochemicals and functional materials due to its ability to act as a catalyst or modifier in ring-forming reactions.