Used in bioconjugation and chemical biology research, it serves as a crosslinker for modifying biomolecules like proteins, peptides, and nucleic acids. Its dual DNP (dinitrophenyl) groups enable specific interactions with antibodies or receptors, making it valuable in immunoassays and targeted drug delivery systems. The PEG3 spacer enhances solubility and reduces steric hindrance, improving binding efficiency. It is also utilized in studying molecular interactions, cellular targeting, and developing diagnostic tools.