This compound is widely used as a crosslinking agent in bioconjugation processes, enabling the attachment of biomolecules such as proteins, peptides, or antibodies to other molecules or surfaces. Its PEG (polyethylene glycol) spacer provides solubility, stability, and reduced immunogenicity, making it ideal for applications in drug delivery systems, where it helps improve the pharmacokinetics of therapeutic agents. Additionally, it is employed in the development of biosensors and diagnostic tools, where it facilitates the immobilization of biomolecules onto substrates while maintaining their functionality. Its NHS ester groups react efficiently with primary amines, ensuring reliable and specific conjugation in biological research and therapeutic applications.