Used in peptide synthesis as a protected amino acid building block, particularly in the development of pharmaceuticals and bioactive peptides. The Boc (tert-butoxycarbonyl) group provides temporary protection for the amine functionality, allowing selective coupling at other reactive sites. The Dab (diaminobutyric acid) residue introduces an additional amine that can be further modified, enabling the construction of branched peptides or conjugation with labels, drugs, or targeting moieties. Commonly applied in solid-phase peptide synthesis (SPPS) for research in drug discovery, especially in designing antimicrobial peptides, hormone analogs, and targeted therapeutics.