This compound is widely used in peptide synthesis, particularly in solid-phase peptide synthesis (SPPS) methods. It serves as a protected lysine derivative, where the Fmoc (fluorenylmethyloxycarbonyl) group protects the amino group, and the OAll (allyl ester) group protects the carboxyl group. This dual protection allows for selective deprotection during peptide chain assembly, enabling precise control over the synthesis process. It is especially valuable in constructing complex peptides and proteins, where lysine residues play a critical role in structure and function. Additionally, its compatibility with various coupling reagents and solvents makes it a versatile building block in organic and medicinal chemistry research.