Used in peptide synthesis as a protecting group for amino acids, specifically for the side chain of diaminobutyric acid (Dab). The Boc group protects the amino terminus, while the Fmoc group shields the side chain amine, allowing selective deprotection during solid-phase peptide synthesis. This compound is particularly valuable in constructing complex peptides with specific sequences, ensuring controlled reactions and high purity in the final product. Its application is essential in pharmaceutical research, especially in developing peptide-based drugs and bioactive molecules.