This chemical is widely used in bioconjugation and labeling applications due to its biotin and PEG components. The biotin moiety allows for strong binding to avidin or streptavidin, making it valuable in affinity-based assays, diagnostics, and protein purification. The PEG (polyethylene glycol) chains enhance solubility, reduce immunogenicity, and improve stability, making it suitable for modifying biomolecules like peptides, proteins, and antibodies. It is also employed in drug delivery systems to improve the pharmacokinetics of therapeutic agents. Additionally, its dual PEG-acid groups enable further functionalization, facilitating the creation of complex biomolecular constructs for research and therapeutic purposes.