Used as a chiral building block in the synthesis of pharmaceuticals, particularly in the development of active pharmaceutical ingredients (APIs) where stereochemistry plays a critical role in biological activity. Its primary amine and secondary amine groups allow for versatile functionalization, making it valuable in the preparation of enzyme inhibitors, receptor agonists, and antagonists. Commonly employed in the manufacture of central nervous system (CNS) agents and cardiovascular drugs. Also utilized in asymmetric synthesis and catalysis due to its chiral structure.