CF660C phalloidin conjugate is the mushroom toxin phalloidin labeled with our far-red fluorescent dye CF660C. The conjugate is useful for staining F-actin. CF660C is several fold brighter and significantly more photostable than Alexa Fluor? 660. CF660C absorbs at 667 nm but can still be sufficiently excited by the 633 or 635 nm laser with emission at 685 nm in the borderline spectral region between far-red and near-IR fluorescence. Please also see CF660R, an exceptionally photostable 660 nm dye ideal for confocal microscopy.