Used extensively in bioconjugation processes, it serves as a key reagent for labeling biomolecules. Its reactive NHS ester group enables efficient coupling with primary amines, making it ideal for modifying proteins, peptides, and antibodies. Commonly employed in fluorescence labeling, it enhances detection and imaging in biological studies. Additionally, it plays a crucial role in the development of diagnostic assays and targeted drug delivery systems, where precise molecular tagging is essential. Its stability and reactivity make it a preferred choice in research and pharmaceutical applications.