Used in pharmaceutical synthesis, particularly as a chiral building block for developing active pharmaceutical ingredients (APIs). Its spirocyclic structure and functional groups make it valuable in creating compounds with high selectivity and potency, especially in central nervous system (CNS) drugs and enzyme inhibitors. The hydrochloride salt form improves stability and solubility, facilitating use in multi-step organic reactions. Commonly employed in research and development for novel therapeutics due to its stereochemical purity and reactivity.