This compound is widely used in bioconjugation processes, particularly for attaching molecules to proteins, peptides, or other biomolecules. Its azido group enables click chemistry reactions, such as the copper-catalyzed azide-alkyne cycloaddition (CuAAC), making it valuable for labeling, imaging, and drug delivery applications. The PEG8 spacer provides solubility and flexibility, reducing steric hindrance during conjugation. The pentafluorophenyl (PFP) ester group reacts efficiently with amines, allowing for stable amide bond formation with target molecules. This makes it a versatile tool in the development of bioconjugates for research, diagnostics, and therapeutic purposes.