This chemical is primarily used in peptide synthesis as a protecting group for cysteine residues. The disulfide bond in the molecule helps maintain the structure and stability of peptides during synthesis. It is particularly useful in solid-phase peptide synthesis (SPPS) where controlled deprotection is required. The Fmoc (fluorenylmethoxycarbonyl) group provides temporary protection for the amino group, allowing selective deprotection without affecting other functional groups. This compound is essential in the production of complex peptides and proteins, ensuring high purity and yield in research and pharmaceutical applications.