Used primarily in peptide synthesis as a specialized coupling reagent, this compound facilitates the formation of amide bonds by activating carboxylic acids in solid-phase peptide synthesis. Its structure allows for efficient Fmoc (fluorenylmethyloxycarbonyl) protection of amino groups, making it valuable in stepwise assembly of peptides. It is particularly useful in automated synthesizers and in the preparation of complex peptides and proteins where high coupling efficiency and minimal racemization are critical. Additionally, it enables the incorporation of modified amino acids in pharmaceutical research and development.