CF®620R dye is a far-red rhodamine-based fluorescent dye. The dye is highly fluorescent and extremely photostable. With its absorption and emission maxima centered at 617 and 639 nm, respectively, the dye may be used as an excellent energy acceptor in fluorescence resonance energy transfer (FRET), or used in multi-color detection applications with instruments that match the unique spectral profiles of the dye for maximal signal. The exceptional water solubility of the dye facilitates bioconjugation and better preserves biological specificity of the conjugates. We offer amine-reactive and thiol-reactive forms of CF®620R (see below). Additional reactive dyes or conjugates may be added on request, contact email@example.com to inquire.
CF®620R Technical Summary
- Abs/Em maxima: 617/639 nm
- Extinction coefficient: 115,000
- Molecular weight: ~738
- Laser line: 633 nm or 635 nm
- Spectrally similar to: LightCycler® Red 640 (LC640)