This chemical is widely used in peptide synthesis, particularly in the production of custom peptides for pharmaceutical research. It serves as a protected form of cysteine, ensuring the thiol group remains stable during the synthesis process. The Boc (tert-butyloxycarbonyl) group protects the amino group, while the Bzl (benzyl) group protects the thiol side chain, preventing unwanted reactions. It is especially valuable in solid-phase peptide synthesis (SPPS) for creating peptides with specific sequences and structures. Its application is critical in developing peptide-based drugs, studying protein interactions, and exploring therapeutic targets in diseases like cancer and infections. Additionally, it is used in biochemical research to investigate the role of cysteine in protein folding and function.