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. Its cyclic amine structure makes it valuable in medicinal chemistry for modifying drug potency, selectivity, and metabolic stability. Commonly employed in the preparation of enzyme inhibitors and receptor modulators, especially in central nervous system (CNS) agents and antiviral drugs. Also utilized in asymmetric synthesis to introduce chirality in complex molecules.