CF640R
CF®640R (Ex-Max 642 nm/Em-Max 662 nm)
CF®640R from Biotium is a fluorophore with an excitation peak at 642 nm and an emission peak at 662 nm. It can be useful in both fluorescence microscopy and flow cytometry. It is spectrally similar to Alexa Fluor™ 647, DyLight™ 649 and Cy5.
Excitation & emission spectra
Key facts
- Excitation maximum
- 642 nm
- Emission maximum
- 662 nm
- Optimal laser line
- 628-640
- Optimal filter
- 660/20
- Relative brightness
- 3 of 5
- Extinction coefficient
- 105000
- Molecular weight
- 832
- Commercial antibodies
- 4.5k from 1 supplier
CF640R has an excitation maximum at 642 nm and an emission maximum at 662 nm, a Stokes shift of 20 nm. Its extinction coefficient is 105000 M⁻¹cm⁻¹. It is optimally excited by the 628-640 laser line.
Frequently asked questions
- What is CF640R?
- CF®640R from Biotium is a fluorophore with an excitation peak at 642 nm and an emission peak at 662 nm. It can be useful in both fluorescence microscopy and flow cytometry. It is spectrally similar to Alexa Fluor™ 647, DyLight™ 649 and Cy5.
- What laser excites CF640R?
- CF640R is optimally excited by the 628-640 laser line. Its excitation maximum is 642 nm.
- What filter should I use to detect CF640R?
- A 660/20 filter captures the peak of the CF640R emission near 662 nm with minimal spillover.
- How bright is CF640R?
- CF640R has a relative brightness of 3 out of 5.
- How many antibodies are available conjugated to CF640R?
- FluoroFinder tracks 4460 commercially available CF640R conjugates, searchable by target, clone, host and application.