This chemical is primarily used in peptide synthesis, particularly in solid-phase peptide synthesis (SPPS). It serves as a protected amino acid derivative, where the Fmoc group protects the amine, and the Trt group protects the side chain of glutamine. The Ser(psi(Me,Me)pro) moiety introduces a pseudoproline dipeptide structure, which helps to reduce aggregation and improve the efficiency of peptide chain elongation during synthesis. This makes it valuable in the production of complex peptides, especially those prone to secondary structure formation or solubility issues. It is commonly employed in the synthesis of therapeutic peptides, research peptides, and peptidomimetics.