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Fluorescein-PEG4-Acid

Catalog Number DYE-FLU-0068
CAS Number 1807518-76-8
Description Fluorescein-PEG4-Acid is a xanthene dye with excitation/emmission maximum 494/517 nm and a free terminal carboxyl acid. Terminal carboxylic acid can react with primary amine groups in the presence of of activators (e.g. EDC, or HATU) to form a stable amide bond. It be used as quantum yield standard. Hydophilic PEG spacer increases solubility in aqueous media and reduces steric hindrance during binding.
Molecular Weight 654.7 g/mol
Molecular Formula C32H34N2O11S
Purity 96%
Solubility Water, DMSO, DMF, DCM
Application For Industrial and laboratory use
Storage -20°C
Emission Maximum 517 nm
Excitation Maximum 494 nm
Shipping Ambient temperature

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