Primarily used as a coupling reagent in peptide synthesis, this chemical facilitates the formation of peptide bonds between amino acids. It is particularly effective in solid-phase peptide synthesis, where it helps in the activation of carboxyl groups, ensuring efficient and high-yield peptide chain elongation. Additionally, it is employed in organic synthesis for the preparation of various esters and amides, where it acts as a catalyst or activator. Its stability and reactivity make it a valuable tool in the development of pharmaceuticals and biologically active compounds.