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N-(m-PEG4)-N'-(PEG4-acid)-Cy5

Catalog Number DYE-FLU-0011
CAS Number 2107273-32-3
Description N-(m-PEG4)-N'-(PEG4-acid)-Cy5 is a near infrared (NIR) fluorescent Cy 5 labeled PEG linker containing 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. The hydophilic PEG spacer increases solubility in aqueous media. Cy5 labeled PEG linker can be easily traced from its blue color and strong fluorescence.
Molecular Weight 829.5 g/mol
Molecular Formula C45H65ClN2O10
Purity 98%
Solubility Water, DMSO, DMF, DCM
Application For Industrial and laboratory use
Storage -20°C
Emission Maximum 667 nm
Excitation Maximum 649 nm
Extinction Coefficients 170000
Shipping Ambient temperature

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