This compound, Boc-Dab(Z)-OH in its DCHA salt form, is a protected derivative of diaminobutyric acid (Dab) widely used in peptide synthesis. The Boc group protects the α-amino function, while the Z group protects the side-chain amino group, enabling selective incorporation into peptide chains and preventing unwanted side reactions during bond formation. The DCHA (dicyclohexylamine) salt improves its stability and solubility in organic solvents, facilitating handling. It is especially valuable in solid-phase peptide synthesis (SPPS) and the production of complex peptides for pharmaceutical research and development, promoting high purity and efficiency in creating bioactive peptides and peptidomimetics.