Used as a chiral building block in the synthesis of pharmaceutical intermediates, particularly in the development of bioactive molecules and drug candidates. Its protected amine and morpholine ring make it valuable in medicinal chemistry for introducing structural diversity and improving solubility in small-molecule therapeutics. Commonly employed in asymmetric synthesis and catalysis due to the stability of the tert-butyl carbamate group and the stereochemical integrity of the (S)-configuration. Also utilized in the preparation of kinase inhibitors and central nervous system agents.