Used as a key intermediate in organic synthesis, particularly in the pharmaceutical industry for constructing nitrogen-containing heterocycles. It serves as a building block in the development of bioactive molecules and drug candidates due to its spirocyclic structure, which can enhance metabolic stability and influence pharmacokinetic properties. Commonly employed in the synthesis of receptor agonists, enzyme inhibitors, and central nervous system agents. Its functional groups allow for selective modifications, making it valuable in combinatorial chemistry and medicinal chemistry research.