Used as a key intermediate in the synthesis of biologically active compounds, particularly in pharmaceuticals targeting central nervous system disorders. Its spirocyclic structure with a sulfone group enhances metabolic stability and influences binding affinity in drug candidates. It is also employed in the development of novel kinase inhibitors and has shown utility in creating analogs for structure-activity relationship (SAR) studies. The amine functionality allows for easy derivatization, making it valuable in combinatorial chemistry and medicinal chemistry research.