Used as a chiral building block in the synthesis of pharmaceuticals, particularly in the development of active pharmaceutical ingredients (APIs) requiring high enantiomeric purity. Its nitrile and amine functional groups allow for versatile chemical transformations, making it valuable in creating intermediates for drugs targeting central nervous system disorders and cardiovascular diseases. Commonly employed in asymmetric synthesis routes where the (S)-configuration is critical for biological activity. Also utilized in the preparation of enzyme inhibitors and receptor agonists/antagonists due to its structural rigidity and stereochemical stability.