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fluorescein isothiocyante CAS 3326-32-7It is a fluorescent labeling reagent for proteins.
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Fluorescein isothiocyanate CAS 27072-45-3It is a derivative of fluorescein used in wide-ranging applications including flow cytometry.
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Fluorescein diacetate CAS596-09-8Also called FDA, can pass through the cellular membrane and as fluorescein accumulation in living cells. As compared with BCECF or fluorescein hydrophilic calcein low, fluorescein leakage from cells was also high. FDA is also used in flow cytometry. Fluorescence excitation and emission wavelengths are 488nm and 530nm.