CF™405M maleimide is a blue fluorescent dye with a maleimide reactive group, which can be used to label a target molecule with a thiol group. CF™405M is spectrally similar to Pacific Blue dye. CF™405M is as bright as Pacific Blue dye but is significantly more photostable than the latter. An additional advantage of CF™405M is that it has less spillover in the 525/50 green channel than Pacific Blue dye due to narrower emission peak, making CF™405M a superior choice in multi-color detection applications. We also offer CF™405S, another 405 nm-excitable dye with an even shorter emission wavelength (See the CF™405S Flyer for details).Compatible with the NucleoCounter® NC-3000™.