CF™680 maleimide is a near-IR fluorescent dye with a maleimide reactive group, which can be used to label a target molecule with a thiol group. CF™680 is brighter than other spectrally similar dyes. Most importantly, antibody conjugates prepared from CF™680 have by far the best signal-to-noise ratio than antibody conjugates prepared from other spectrally similar dyes. Please also see CF™680R, an extremely photostable rhodamine-based near-IR dye. Please download the CF™680 dye flyer for more details.