STAR FLUOR 645 NHS ester is the reagent of choice in the far red region and is ideally excited by the 633nm laser line. High brightness and photostability provide stable signal output in any fluorescent detection assay.
Star fluor 645 NHS ester belongs to the cyanine class of dyes with superior photophysical properties and is as bright as Alexa Fluor 647.
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Properties for STAR FLUOR 645 NHS ester
| Features | As bright as Alexa Fluor 647 High water solubility and pH insensitive The most popular tool in any multi-color application. |
| λabs (Ethanol) | 648 nm (abs) |
| λem (Ethanol) | 667 nm (em) |
| Stokes shift | 19 nm |
| ε (Ethanol) | 250,000 M-1cm-1 |
| Φ (Ethanol) | 0.28 |
| Quencher | QSY21 |
| Solubility | Water, Methanol, DMSO, DMF |
| Laser excitation | Krypton-Argon 647 nm - Diode 635 nm red |
| Spectrally comparable dyes | Alexa Fluor® 647 AllophycocyaninBODIPY® 650/665 Cy™5 DyLight®649 Promo Fluor®647 |
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