This compound is widely used in peptide synthesis as an activated ester, facilitating the incorporation of phenylglycine (Phg) into peptide chains. Its application is particularly valuable in the production of complex peptides and peptidomimetics, where it helps achieve high coupling efficiency and selectivity. The compound is also employed in the development of pharmaceuticals, especially in the synthesis of peptide-based drugs targeting various diseases. Additionally, it serves as a building block in organic chemistry research for creating novel compounds with potential biological activity. Its stability and reactivity make it a preferred choice in solid-phase peptide synthesis (SPPS) and other advanced chemical processes.