Used in pharmaceutical research as a key intermediate in the synthesis of selective serotonin reuptake inhibitors (SSRIs) and other central nervous system agents. Its spirocyclic structure provides conformational rigidity, enhancing binding selectivity to neurotransmitter receptors. Commonly employed in the development of antidepressants and anxiolytic drugs due to its favorable pharmacokinetic properties and ability to cross the blood-brain barrier. The hydrochloride salt form improves water solubility and stability for in vitro and in vivo experiments. Also utilized in structure-activity relationship (SAR) studies to optimize potency and reduce off-target effects in novel psychoactive compounds.