RB-PEG-Biotin (MW 400) [Rhodamine B-PEG-Biotin (MW 400)] is a fluorescent dye composed of Rhodamine B, PEG, and biotin. Biotin allows high-affinity binding to streptavidin or avidin. RB-PEG-Biotin (MW 400) is crucial for specific capture and detection of biomolecules (Ex/Em = 546/610 nm).
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