Fluorescein-PEG4-Propargyl is a xanthene dye that reacts with terminal azide via a copper-catalyzed click reaction (CuAAC) to form a stable triazole linker. It is a popular labeling dye used in Click Chemistry reactions. It could be used as a quantum yield standard. Hydrophilic PEG spacer increases solubility in aqueous media and reduces steric hindrance during binding. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.
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