Used as a chiral building block in the synthesis of pharmaceuticals, particularly in the development of optically active drugs where stereochemistry plays a critical role in biological activity. Its primary application lies in the production of active pharmaceutical ingredients (APIs) that require high enantiomeric purity. It serves as an intermediate in the manufacture of selective receptor agonists and antagonists, especially in central nervous system and cardiovascular medications. Due to the presence of two amine groups with different reactivities, it allows for selective functionalization, enabling complex molecular constructions in medicinal chemistry. Also employed in the preparation of asymmetric catalysts and chiral ligands for enantioselective synthesis.