Used primarily in peptide synthesis, it serves as a protected amino acid derivative. The Fmoc group ensures selective deprotection during solid-phase peptide synthesis, while the allyl group protects the serine side chain. This allows for precise control over the assembly of peptides, making it valuable in the production of complex peptides for research and pharmaceutical applications. It is particularly useful in synthesizing peptides with specific post-translational modifications or those requiring selective deprotection strategies.