Used as a chiral building block in the synthesis of pharmaceuticals, particularly in the development of bioactive molecules with stereoselective activity. Its structure supports the creation of compounds with enhanced metabolic stability and target specificity. Commonly employed in the preparation of vasopressin receptor antagonists and other central nervous system agents. The amine functionality allows for coupling reactions, enabling attachment to various molecular frameworks in drug discovery. Preferred in asymmetric synthesis due to its stable chiral center and compatibility with diverse reaction conditions.