Used as a versatile linker in bioconjugation, it facilitates the attachment of biomolecules such as proteins, peptides, or antibodies to other entities like nanoparticles, drugs, or surfaces. Its polyethylene glycol (PEG) spacer enhances solubility, reduces immunogenicity, and improves stability in biological systems. Commonly applied in drug delivery systems, it helps in creating targeted therapeutics with prolonged circulation time. It is also utilized in diagnostic assays and biosensors for precise molecular recognition. Additionally, it plays a role in surface modification to create biocompatible materials for medical devices or tissue engineering.