Used in peptide synthesis as a building block to introduce the beta-homoisoleucine residue into peptide chains. It is particularly valuable in the development of modified peptides for pharmaceutical research, where it helps enhance stability, bioavailability, or biological activity. The Boc (tert-butyloxycarbonyl) protecting group ensures selective reactivity during the synthesis process, making it a key tool in creating complex peptide structures for drug discovery and development.