This chemical is widely used in bioconjugation and drug delivery systems due to its ability to link molecules through its reactive functional groups. It serves as a spacer or linker in the development of antibody-drug conjugates (ADCs), enabling the attachment of therapeutic agents to antibodies for targeted cancer therapy. Additionally, it is utilized in the modification of peptides, proteins, and other biomolecules to enhance their solubility, stability, and bioavailability. Its PEG (polyethylene glycol) component reduces immunogenicity and prolongs circulation time in the body, making it valuable in pharmaceutical and biomedical research.