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FLUX 640

FLUX 640 (Ex-Max 644 nm/Em-Max 660 nm)

abberior FLUX 640 is a dye developed for MINFLUX imaging in the red spectral region. It combines exceptional photostability, high brightness, and low background labeling with photoswitching kinetics optimized for MINFLUX imaging. abberior FLUX 640 can be applied with excitation laser wavelengths between 630 - 650 nm together with a detection window between 650 - 750 nm. For MINFLUX imaging abberior FLUX 640 is used with MINFLUX imaging buffers such as GLOX buffer. Our abberior FLUX 640 can substitute dyes like Alexa Fluor® 647, or Cy5®. The combination of abberior FLUX 640 and abberior FLUX 680 is recommended for 2 color MINFLUX imaging.

Excitation & emission spectra

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Key facts

Excitation maximum
644 nm
Emission maximum
660 nm
Optimal laser line
640
Extinction coefficient
240000

FLUX 640 has an excitation maximum at 644 nm and an emission maximum at 660 nm, a Stokes shift of 16 nm. Its extinction coefficient is 240000 M⁻¹cm⁻¹. It is optimally excited by the 640 laser line.

Frequently asked questions

What is FLUX 640?
abberior FLUX 640 is a dye developed for MINFLUX imaging in the red spectral region. It combines exceptional photostability, high brightness, and low background labeling with photoswitching kinetics optimized for MINFLUX imaging. abberior FLUX 640 can be applied with excitation laser wavelengths between 630 - 650 nm together with a detection window between 650 - 750 nm. For MINFLUX imaging abberior FLUX 640 is used with MINFLUX imaging buffers such as GLOX buffer. Our abberior FLUX 640 can substitute dyes like Alexa Fluor® 647, or Cy5®. The combination of abberior FLUX 640 and abberior FLUX 680 is recommended for 2 color MINFLUX imaging.
What laser excites FLUX 640?
FLUX 640 is optimally excited by the 640 laser line. Its excitation maximum is 644 nm.