Bis-PEG7-PFP ester is widely used in bioconjugation and chemical synthesis due to its reactive PFP (pentafluorophenyl) ester groups. These groups enable efficient coupling with amines, making it valuable for modifying proteins, peptides, and other biomolecules. It is particularly useful in creating PEGylated compounds, which enhance solubility, stability, and bioavailability of therapeutic agents. Additionally, it serves as a crosslinker in the development of drug delivery systems, hydrogels, and biomaterials. Its applications also extend to surface functionalization for biosensors and diagnostic tools, where controlled and stable conjugation is essential.