Used extensively in bioconjugation and click chemistry reactions, this compound serves as a versatile linker for attaching biomolecules, such as proteins, peptides, or antibodies, to other functional groups or surfaces. Its aldehyde group allows for selective conjugation with amine-containing molecules, while the PEG spacer enhances solubility and reduces steric hindrance. The azide group enables efficient click chemistry reactions, particularly with alkynes, facilitating the creation of stable triazole linkages. This makes it valuable in drug delivery systems, diagnostic assays, and the development of bioconjugated materials for research and therapeutic applications.