This chemical is widely utilized in bioconjugation and drug delivery systems due to its bifunctional properties. The aldehyde group allows for specific conjugation with amines or hydrazines, making it valuable for linking molecules like peptides, proteins, or antibodies. The PEG spacer enhances solubility and reduces immunogenicity, which is crucial in therapeutic applications. The amine group at the other end provides an additional site for further functionalization, enabling the creation of complex molecular architectures. It is particularly useful in developing targeted drug delivery systems, diagnostic probes, and bioconjugate vaccines, where precise and stable linkages are essential. Its versatility also extends to materials science, where it is used to modify surfaces or create functionalized polymers for biomedical applications.