Date published: 2025-10-15

1-800-457-3801

SCBT Portrait Logo
Seach Input

Chromeo™ 642 NHS-ester

0.0(0)
Write a reviewAsk a question

Application:
Chromeo™ 642 NHS-ester is a bright, dark-red fluorescent labeled conjugate for bioanalysis
Molecular Weight:
701.8
Molecular Formula:
C39H48N3O7P
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.
* Refer to Certificate of Analysis for lot specific data.

QUICK LINKS

Chromeo™ 642 NHS-Ester 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 NHS-Ester has a molar extinction coefficient of 180,000M-1cm-1 and its absorption and emission wavelength is 642nm and 660nm, respectively.


Chromeo™ 642 NHS-ester References

  1. Set of fluorochromophores in the wavelength range from 450 to 700 nm and suitable for labeling proteins and amino-modified DNA.  |  Wetzl, B., et al. 2003. J Chromatogr B Analyt Technol Biomed Life Sci. 793: 83-92. PMID: 12880856
  2. A new fluorescence resonance energy transfer pair and its application to oligonucleotide labeling and fluorescence resonance energy transfer hybridization studies.  |  Gruber, M., et al. 2005. J Fluoresc. 15: 207-14. PMID: 15986147
  3. A resonance energy transfer immunoassay based on a thiol-reactive ruthenium donor dye and a longwave-emitting acceptor.  |  Weh, J., et al. 2007. Chembiochem. 8: 122-8. PMID: 17173270
  4. Fluorescent silica nanoparticles.  |  Mader, H., et al. 2008. Ann N Y Acad Sci. 1130: 218-23. PMID: 18596351
  5. Probing the electromagnetic field of a 15-nanometre hotspot by single molecule imaging.  |  Cang, H., et al. 2011. Nature. 469: 385-8. PMID: 21248848
  6. Colloidal silica nanoparticles for use in click chemistry-based conjugations and fluorescent affinity assays  |  Daniela E. Achatz, Florian J. Heiligtag, Xiaohua Li, Martin Link, Otto S. Wolfbeis. 2010. Sensors and Actuators B: Chemical. 150: 211-219.

Ordering Information

Product NameCatalog #UNITPriceQtyFAVORITES

Chromeo™ 642 NHS-ester, 1 mg

sc-364716
1 mg
$281.00