This chemical is widely used in bioconjugation and surface modification due to its thiol and hydroxyl functional groups. It serves as a linker in drug delivery systems, enabling the attachment of therapeutic molecules to carriers like nanoparticles or proteins. Its polyethylene glycol (PEG) chain enhances solubility and reduces immunogenicity, making it suitable for improving the stability and bioavailability of drugs. Additionally, it is utilized in the preparation of hydrogels and biomaterials for tissue engineering, where its properties help control material flexibility and biocompatibility. In diagnostics, it is employed to functionalize biosensors and probes, ensuring efficient targeting and signal detection.