AZDye 633 Picolyl Azide

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

    AZDye™ 633 Picolyl Azide is an advanced fluorescent probe that incorporates a copper-chelating motif to raise the effective concentration of Cu(I) at the reaction site to boost the efficiency of the CuAAC reaction, resulting in a faster and more biocompatible CuAAC labeling. Up to 40-fold increase of signal intensity, compared to conventional azides, was reported (see Selected References).

    AZDye™ 633 Azide is a bright and photostable far-red fluorescent probe with excitation ideally suited to the 633 nm or 635 nm laser excitation source. AZDye™ 633 Azide is water-soluble, pH-insensitive from pH 4 to pH 10. AZDye™ 633 spectrally is almost identical to Alexa Fluor® 633, DyLight® 633 or CF® 633 Dye. Combination of superior brightness and very low autofluorescence background signal in most biological samples in far-red spectral region allows for very sensitive detection of alkyne-labeled biomolecules.

    Alexa Fluor® 633 and DyLight® 633 are registered trademarks of Thermo Fisher Scientific.

    Learn more about picolyl azide reagents.
    Abs/Em Maxima
    631/651 nm
    Extinction Coefficient
    Flow Cytometry Laser Line
    633 nm or 647 nm
    Microscopy Laser Line
    633 nm or 647 nm
    Spectrally Similar Dyes
    Alexa Fluor® 633, CF® 633
    Molecular weight
    Water, DMSO, DMF
    Blue solid
    Storage conditions
    -20°C. Desiccate
    Shipping conditions
    Ambient temperature


    1. Morral, C., et al. (2020). Protocol for Efficient Protein Synthesis Detection by Click Chemistry in Colorectal Cancer Patient-Derived Organoids Grown In Vitro. STAR Protocols, Volume 1, 2 [ScienceDirect]
    2. Uchiyama, J., et al. (2020). Quantitative nascent proteome profiling by dual pulse labeling with O-propargyl-puromycin and stable isotope labeled amino acids. The Journal of Biochemistry, 10, 1093. [Oxford Academic]
    3. Jiang, H., et al. (2014). Monitoring Dynamic Glycosylation in Vivo Using Supersensitive Click Chemistry. Bioconjugate Chem.,, 25, 698-706. [PubMed]
    4. Uttamapinant, C., et al. (2012). Fast, Cell-Compatible Click Chemistry with Copper-Chelating Azides for Biomolecular Labeling. Angew. Chem. Int. Ed,., 51, 5852-56. [PubMed]
    5. Gaebler, A.,et al. (2016). A highly sensitive protocol for microscopy of alkyne lipids and fluorescently tagged or immunostained proteins. J. Lipid. Res., 57, 1934-47. [PubMed]
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