Used as a chiral building block in the synthesis of biologically active molecules, particularly in pharmaceuticals where stereochemistry plays a critical role. Its sulfonate group enables water solubility and can participate in ionic interactions, making it valuable in designing enzyme inhibitors or receptor ligands. Commonly employed in peptide mimetics and prodrug strategies due to the Boc-protected amine, which allows for selective deprotection and further coupling reactions in multi-step organic syntheses. Also utilized in the development of sulfonated amino acid derivatives for medicinal chemistry and biochemical research.