Used as a key intermediate in organic synthesis, particularly in the preparation of pyrrolidine-based pharmaceuticals and bioactive molecules. Its structure allows for functionalization at multiple sites, making it valuable in the development of nitrogen-containing heterocycles. Commonly employed in cyclization and alkylation reactions to build complex ring systems found in medicinal agents. Also utilized in the study of reaction mechanisms involving onium ions due to its stable cationic nature. Suitable for research in asymmetric synthesis and catalysis where controlled stereochemistry is required.