Cy3-PEG-biotin (MW 5000)

Cy3-PEG-biotin (MW 5000) is a versatile tri-functional reagent combining a Cy3 fluorophore for red-orange emission (~570 nm), a PEG spacer, and biotin for high-affinity streptavidin binding. It is extensively used in vitro for techniques like fluorescence microscopy, flow cytometry, and immunoassays to label, capture, and detect specific biomolecules.