Used in peptide synthesis, particularly in solid-phase peptide synthesis (SPPS) methods. It serves as a building block for introducing D-serine residues into peptide chains. The Fmoc group protects the amino group during synthesis, while the tBu group protects the hydroxyl side chain of serine. This compound is essential in creating peptides with specific sequences and structures, which are important in drug development, biochemical research, and the study of protein interactions. Its application is critical in producing peptides with high purity and accuracy.