This chemical is widely used in the field of bioconjugation and protein modification. It serves as a versatile linker for attaching functional groups, such as fluorescent dyes or drug molecules, to proteins or peptides. Its structure includes a reactive pyrrole dione group, which facilitates efficient coupling with amino groups in biomolecules. The polyethylene glycol (PEG) chain in its structure enhances solubility and reduces immunogenicity, making it suitable for applications in drug delivery systems. Additionally, it is utilized in the development of antibody-drug conjugates (ADCs), where it helps in creating stable and targeted therapeutic agents. Its use in research and pharmaceutical industries highlights its importance in advancing biomedical technologies.