H-Dab(Z)-OH is primarily used in peptide synthesis as a protected form of the amino acid diaminobutyric acid (Dab). The Z (benzyloxycarbonyl) group serves as a protective group for the amine functionality, preventing unwanted reactions during peptide chain assembly. This compound is particularly useful in the synthesis of complex peptides and proteins where selective protection and deprotection of amino groups are required. It is also employed in the development of peptide-based drugs and bioactive molecules, where precise control over the structure is critical for activity. Additionally, H-Dab(Z)-OH finds applications in research settings for studying peptide interactions and designing novel peptide sequences with specific functions.