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AAT Bioquest

XFD610 tetrazine

Product key features

  • Ex/Em: 611/629 nm
  • Extinction coefficient: 144,000 cm-1M-1
  • Reactive Group: Tetrazine
  • Click Chemistry Conjugation: Provides rapid, copper-free labeling of TCO-modified biomolecules
  • Advanced Dye Properties: Excellent water solubility and superior optical properties to Texas Red™; structural match to Alexa Fluor™ 610
  • Robust Signal Performance: Maintains high intensity and pH independence (pH 4-10) with exceptional photostability

Product description

XFD610, manufactured by AAT Bioquest, is a red-fluorescent dye that is structurally identical to Alexa Fluor™ 610 (ThermoFisher). The dye exhibits high photostability and strong fluorescence, making it well-suited for advanced imaging applications and flow cytometry. Its water solubility and pH-independent fluorescence over a broad range (pH 4–10) ensure consistent performance under diverse experimental conditions. XFD610 enables reproducible labeling with high signal intensity, providing reliable results in fluorescence-based assays. Additionally, it serves as a robust alternative to Texas Red™, offering improved optical properties for experiments requiring enhanced fluorescence output.

XFD610 tetrazine is particularly useful for labeling TCO-modified biomolecules under copper-free conditions. It reacts with TCO-functionalized molecules, forming a stable conjugate via a dihydropyrazine moiety. This click reaction is favored over others due to its extremely fast kinetics and higher yields under mild reaction conditions, making it a popular choice for researchers.

Spectrum

Page updated on April 25, 2025

Ordering information

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Catalog Number70068
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Additional ordering information

Telephone1-800-990-8053
Fax1-800-609-2943
Emailsales@aatbio.com
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Physical properties

Molecular weight

1168.57

Solvent

DMSO

Spectral properties

Correction Factor (260 nm)

0.43

Correction Factor (280 nm)

0.44

Extinction coefficient (cm -1 M -1)

144,000

Excitation (nm)

611

Emission (nm)

629

Storage, safety and handling

H-phraseH303, H313, H333
Hazard symbolXN
Intended useResearch Use Only (RUO)
R-phraseR20, R21, R22

Storage

Freeze (< -15 °C); Minimize light exposure
UNSPSC12171501
Product Image
Product Image
Gallery Image 1
Schematic illustrating the strain‐promoted inverse‐electron‐demand Diels–Alder (iEDDA) reaction between a tetrazine–dye conjugate and a trans‐cyclooctene (TCO)–modified biomolecule. The tetrazine–dye selectively and rapidly reacts with the TCO moiety on the biomolecule to form a stable linkage, labeling the nucleic acid with the dye. This bioorthogonal “click chemistry” process is fast, selective, and well‐suited for biocompatible labeling applications.