Glycine benzyl ester p-toluenesulfonate salt is widely used in peptide synthesis as a protecting group for the carboxyl group of glycine. It facilitates the formation of peptide bonds by preventing unwanted reactions at the carboxyl site during the synthesis process. This compound is particularly valuable in solid-phase peptide synthesis, where it helps in the stepwise assembly of amino acids into peptides. Additionally, it is utilized in the preparation of glycine derivatives for pharmaceutical research, enabling the development of new drugs and bioactive compounds. Its stability and ease of removal make it a preferred choice in organic and medicinal chemistry.