This is the tert-butyl (Boc) carbamate-protected Weinreb amide derivative of (R)-serine, serving as a key chiral building block in organic synthesis. It is widely used in the preparation of enantiomerically pure pharmaceutical intermediates, enabling the selective formation of ketones via reaction with organometallic reagents without over-addition. The Boc group protects the amine functionality, facilitating applications in asymmetric synthesis, peptide mimetics, enzyme inhibitors, receptor modulators, and other biologically active molecules critical for drug discovery.