Merck, 65906-10NMOL, Phalloidin–Atto 647N

Phalloidin–Atto 647N is a new fluorescentlabel targeting the red spectral region. Atto 647N is a cationic dye, and postcoupling, it carries a net electrical charge of +1.Like most Atto labels, the absorption andfluorescence of Atto 647N are independent of pH between 2-11. Atto 647N issupplied in the form of a mixture containing two isomers having identicalfluorescence and absorption properties. Atto labels have rigid structures thatdo not show any cis-trans-isomerization.