Used as a key intermediate in the synthesis of pharmaceuticals, particularly in developing central nervous system agents. Its spirocyclic structure provides structural rigidity, enhancing selectivity and metabolic stability in drug candidates. Commonly found in research on serotonin and dopamine receptor modulators for treating psychiatric disorders such as depression, schizophrenia, and addiction. Also explored in the development of analgesics due to its affinity for opioid receptors. Its unique fused ring system makes it valuable in medicinal chemistry for optimizing pharmacokinetic properties.