Fmoc-Dab-OH is widely used in peptide synthesis as a building block for incorporating the amino acid diaminobutyric acid (Dab) into peptide chains. The Fmoc (fluorenylmethyloxycarbonyl) group serves as a protective group for the amino functionality, allowing for selective deprotection during solid-phase peptide synthesis. This compound is particularly valuable in the development of peptides with enhanced stability, specificity, or biological activity, as Dab can introduce unique structural and functional properties. It is also employed in the synthesis of peptidomimetics and bioactive molecules, contributing to research in drug discovery and biochemistry. Additionally, Fmoc-Dab-OH is used in the preparation of modified peptides for studying protein-protein interactions and enzyme mechanisms.