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Eterneon-Red 645 Azide

Special Fluorescent Short Stoke Shift Dye to label DNA/RNA

Size Catalog No. Price
1 mg BCFA-201-1 € 120,00
5 mg BCFA-201-5 € 450,00
  • Eterneon-Red 645 Azide is a fluorescent dye and an alternative to Cy5 with the following advantages: It is water-soluble and therefore very well suited for click conjugation with alkynylated biomolecules in aqueous media.



    Efficient DNA Click Reaction Replaces Enzymatic Ligation, M. Kollaschinski et al., 2019, Bioconjugate Chemistry, Vol. 31(3), p. 507–512.


    Epigenetic mechanisms controlling human leukemia stem cells and therapy resistance, S. Takao et al., 2022, bioRxiv.


    ARID1A Regulates Transcription and the Epigenetic Landscape via POLE and DMAP1 While ARID1A Deficiency or Pharmacological Inhibition Sensitizes Germ Cell Tumor Cells to ATR Inhibition, L. Kurz et al., 2020, Cancers, Vol. 12(4), p. 905.


    • Molecular Formula


    • Shelf Life

      12 months unopened after receipt

    • Storage Conditions

      -20 °C, dark

    • Molecular Weight

      663.85 g/mol

    • Purity

      ≥ 95% (HPLC)

    • Physical State

      blue to metallic solid

    • CAS Number


    • Additional name

      Disulfonate pentamethine cyanine azide

    • Excitation (max)

      643 nm

    • Emission (max)

      662 nm

    • Ɛ (max)

      250,000 cm-1M-1

    • Solubility

      H2O, DMSO, DMF, MeOH, MeCN

    • Preparation/Handling

      For a 10 mM solution add 150 μL to 1 mg.
      For a 10 mM solution add 753 μL to 5 mg.