Used in peptide synthesis, this compound serves as a protected serine derivative with an Fmoc-protected isoleucine attached to the side chain. It is particularly valuable in solid-phase peptide synthesis (SPPS) for constructing complex and branched peptides. The Boc group protects the amine functionality of serine, while the side chain hydroxyl of serine is protected via ester linkage to Fmoc-Ile, allowing selective deprotection and coupling reactions. This enables the sequential assembly of peptides with high precision. It is commonly employed in the production of therapeutic peptides, research peptides, and bioactive molecules, ensuring controlled and efficient synthesis. Its application is critical in pharmaceutical development and biochemical research, where accurate peptide sequences are essential.