L-2-Amino-4-sulfobutyric acid is primarily used in biochemical research and pharmaceutical applications. It serves as a key intermediate in the synthesis of various peptides and proteins, particularly in studies involving enzyme activity and protein structure. Its sulfonic acid group makes it valuable for modifying peptides to enhance their solubility and stability in aqueous solutions. Additionally, it is utilized in the development of enzyme inhibitors, aiding in the study of metabolic pathways and potential therapeutic targets. In the pharmaceutical industry, it is explored for its potential in designing drugs targeting specific enzymes or receptors, particularly in conditions involving oxidative stress or inflammation. Its unique structure also makes it a candidate for use in diagnostic assays and as a reagent in biochemical experiments.