Chromeo 642 streptavidin A bright, dark-red fluorescent labeled conjugate for bioanalysis.

Chromeo™ 642 streptavidin

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Application: Chromeo™ 642 streptavidin is a bright, dark-red fluorescent labeled conjugate for bioanalysis
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.
* Refer to Certificate of Analysis for lot specific data (including water content).

Chromeo™ 642 streptavidin is conjugated to Chromeo™ 642, a bright, dark-red fluorescent label for enabling detection in immunofluorescence, high content screening, ELISA and FRET applications, as well as in flow cytometry. It exhibits superior luminescence properties, a broad Stokes shift, stability towards photobleaching and pH, and low cell toxicity. Chromeo™ 642 is compatible with various excitation sources including tungsten and xenon arc lamps, the helium-neon laser, the 647 line of the argon-krypton-ion laser and common red diode lasers with emissions of 635nm or 650nm. It is comparable to CruzFluor™ 647 dyes. Chromeo™ 642 streptavidin has a molar extinction coefficient of 180,000M-1cm-1 and its absorption and emission wavelength is 650nm and 669nm, respectively. It has a quantum yield of 21% and a dye to protein ratio 0.2-0.5. Chromeo™ 642 streptavidin should be stored in the dark.


References

1. Wetzl, B. et al. 2003. J. Chromatogr. B Analyt. Technol. Biomed. Life Sci. 793(1): 83-92. PMID: 12880856<br> 2. Gruber, M. et al. 2005. J Fluoresc. 15(3): 207-214. PMID: 15986147<br> 3. Weh, J. et al. 2007. Chembiochem. 8(1): 122-128. PMID: 17173270<br> 4. Mader, H. et al. 2008. Ann. N. Y. Acad. Sci. 1130 : 218-223. PMID: 18596351<br> 5. Cang, H. et al. 2011. Nature. 469(7330): 385-388. PMID: 21248848<br>

Formulation :
1 mg/ml PBS containing 0.2% blocking reagent and 0.09% Azide
Appearance :
Solution
Physical State :
Liquid
Storage :
Store at 4° C
Fluoresence :
&lambda;ex 650 nm, &lambda;em 669 nm
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.

Download SDS (MSDS)

Certificate of Analysis

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