Used primarily as a coupling agent in peptide synthesis, facilitating the formation of amide bonds between amino acids. It is also employed in the modification of proteins and nucleic acids, aiding in the conjugation of biomolecules for research and diagnostic purposes. Additionally, it finds application in the preparation of polymers and materials, where it helps in crosslinking reactions to enhance material properties. Its role in bioconjugation chemistry is crucial for developing targeted drug delivery systems and biosensors.