Used primarily in peptide synthesis, it serves as a protecting group for cysteine residues. The FMOC group ensures selective deprotection during solid-phase peptide synthesis, while the MTT group offers stability under acidic conditions. This chemical is crucial for synthesizing peptides with complex structures, especially in pharmaceutical research and development. It enables precise control over peptide chain assembly, ensuring high purity and yield in the final product. Its application is vital in creating therapeutic peptides, studying protein interactions, and developing bioactive compounds.