This chemical is primarily used in bioconjugation and chemical biology research. It serves as a linker molecule for attaching functional groups, such as proteins, peptides, or small molecules, to other biomolecules or surfaces. Its PEG (polyethylene glycol) chains enhance solubility and reduce immunogenicity, making it suitable for applications in drug delivery systems and targeted therapies. The propargyl group allows for click chemistry reactions, enabling efficient and specific conjugation with azide-containing compounds. This makes it valuable in the development of bioconjugates for diagnostic tools, therapeutic agents, and advanced materials in nanotechnology. Its acid group further facilitates coupling reactions with amines or other reactive sites, enhancing its versatility in biochemical applications.