ATTO 580Q is a new fluorescence quencher. Characteristic features of the label are strong absorption and high thermal and photo-stability.

ATTO 580Q and its derivatives are supplied as crystalline solvent-free perchlorate salts. The dye is moderately hydrophilic. Its NHS-ester and maleimide show excellent solubility in polar solvents like DMF, DMSO or acetonitrile. For details of coupling see our recommended labeling procedure (PDF). ATTO 580Q consists of three isomers with practically identical absorption.