This chemical is widely used in bioconjugation processes, particularly in the modification of proteins, peptides, and antibodies. Its reactive TFP ester group enables efficient coupling with amine-containing molecules, making it valuable for creating stable amide bonds. The PEG spacer enhances solubility and reduces steric hindrance, improving the performance of the conjugated molecules in biological systems. It is commonly applied in the development of drug delivery systems, diagnostic probes, and targeted therapies, where precise and stable conjugation is critical. Additionally, it is utilized in research for labeling biomolecules to study their interactions, localization, and function in vitro and in vivo.