AFDye 568 Maleimide

Unit Size
Price (USD)
1 mg
In stock
5 mg
In stock
25 mg
In stock
100 mg
In stock

    AFDye™ 568 Maleimide (Alexa Fluor® 568 C5 Maleimide equivalent) is a bright, and photostable, red-fluorescent probe optimally excited by the 568 nm laser line on the Ar-Kr mixed-gas laser. AFDye™ 568 Maleimide is water-soluble and its fluorescence is pH independent over a wide pH range. The brightness and photostability of this dye are best suited to direct imaging of low-abundance targets.

    Abs/Em Maxima
    578/602 nm
    Extinction Coefficient
    Flow Cytometry Laser Line
    532 nm or 568 nm
    Microscopy Laser Line
    532 nm or 568 nm
    Spectrally Similar Dyes
    Alexa Fluor® 568, CF® 568
    Molecular weight
    857.93 (protonated)
    Water, DMSO, DMF
    Red solid
    Storage conditions
    -20°C. Desiccate
    Shipping conditions
    Ambient temperature

    AFDye™ 568 Maleimdie (Alexa Fluor 568 C5 Maleimdie equivalent) is an sulfhydryl-reactive, red fluorescent dye routinely used to label proteins or antibodies through the thiol (Cys), thiol-modified oligonucleotides, and other thiol-containing biomolecules. AFDye™ 568 dye can be used for proteins labeling at high molar ratios without significant self-quenching, enabling brighter conjugates and more sensitive detection.

    AFDye™ 568 is a water-soluble, photostable, and bright orange dye with pH insensitive emission from pH 4 to pH 10. The excitation of AFDye™ 568 dye ideally suited for the 568 nm laser line on the Ar-Kr mixed-gas laser. AF™ 568 dye conjugated to a variety of antibodies, peptides, proteins, tracers, and amplification substrates often used for generation of stable signal in imaging and flow cytometry.

    Alexa Fluor® is a registered trademark of Thermo Fisher Scientific. CF® Dyes is a registered trademark of Biotium Inc.


    Related Products
    AFDye 594 DBCO

    Excitation maximum: 590 nm
    Emission maximum: 617 nm

    AFDye 647 DBCO

    Excitation maximum: 648 nm
    Emission maximum: 671 nm