Used as a key intermediate in the synthesis of pharmaceuticals, particularly in the development of bioactive molecules and drug candidates. Its strained spirocyclic structure provides unique conformational rigidity, making it valuable in medicinal chemistry for modulating potency, metabolic stability, and selectivity of active compounds. Commonly employed in the design of enzyme inhibitors and receptor modulators, especially in central nervous system (CNS) and oncology-related research. The hydrochloride salt form enhances solubility and handling in synthetic processes.