CF568 phalloidin conjugate is the mushroom toxin phalloidin labeled with our superior red fluorescent dye CF568. Because of their highly specific binding to F-actin, fluorescent phalloidin conjugates are excellent tools for cytoskeleton studies. CF568 has an excitation spectrum optimally matching the 568 nm line of the Ar-Kr mixed-gas laser. Bioconjugates of the dye are much brighter than those of Alexa Fluor? 568. In addition, the photostability of CF568 is superior to that of Alexa Fluor? 568, making CF568 a much better choice for demanding applications, such as confocal microscopy and single molecule imaging.