Chromeo 642 Dye Profile


Laser Line


Common Filter


Excitation Max


Emission Max

About Chromeo 642

Chromeo™ 642 is a bright, dark-red fluorescent label that replaces Cy5*, Alexa Fluor 647*, DyLight 649* and other dyes excitable within a wavelength range of 630-650 nm. 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 635 nm or 650 nm.