Used as a key intermediate in the synthesis of peptide-based pharmaceuticals, particularly in the development of protease inhibitors. Its structure allows for selective protection of amino groups during solid-phase peptide synthesis, making it valuable in creating complex bioactive peptides with high purity. The sulfonamide and guanidine functionalities contribute to enhanced binding affinity to target enzymes, useful in drug design for antiviral and anticancer agents. Commonly employed in research settings for constructing enzyme inhibitors where precise stereochemistry is critical for biological activity.