Used in the synthesis of peptide-based pharmaceuticals, particularly as a protected intermediate in the preparation of protease inhibitors. Its structure supports selective coupling in solid-phase peptide synthesis, enabling the development of enzyme-targeted drugs. The sulfonamide and guanidine groups enhance binding affinity to specific biological targets, making it valuable in medicinal chemistry for designing inhibitors with high potency and selectivity. Commonly applied in research settings for developing treatments targeting viral proteases or metabolic enzymes.