This compound is primarily utilized in peptide synthesis as a protecting group for amino acids. The benzyl ester moiety helps in safeguarding the carboxyl group during the synthesis process, while the p-toluenesulfonate salt enhances solubility and stability. It is particularly useful in solid-phase peptide synthesis (SPPS) and solution-phase peptide synthesis, where selective deprotection is required. Additionally, it finds application in the preparation of dipeptides and oligopeptides, serving as an intermediate in the development of bioactive peptides and pharmaceutical compounds. Its role in facilitating controlled peptide bond formation makes it valuable in research and industrial settings for producing peptides with high purity and specificity.