Cy5-PEG-SH (MW 5000)

Cy5-PEG-SH (MW 5000) is a thiol-reactive fluorescent dye conjugate used for labeling biomolecules via stable thioether linkages, such as with maleimide-activated targets. Its polyethylene glycol spacer enhances solubility and reduces non-specific binding, making it suitable for in vitro assays and in vivo imaging applications in molecular biology and bioconjugation research.