Janelia Fluor® 549, Tetrazine
Chemical Name: 3,6-Di-1-azetidinyl-9-[[4-[(1,2,4,5-tetrazin-3-yl)benzyl]carbamoyl]-2-carboxyphenyl]xanthylium, inner salt
Biological Activity
Key Information: Janelia Fluor® 549, Tetrazine is a yellow fluorescent dye; supplied with a tetrazine reactive handle for copper-free click chemistry. Suitable for live-cell imaging.Application: Suitable for confocal microscopy and super resolution microscopy (SRM) techniques including dSTORM (in both live and fixed cells) and STED. Janelia Fluor® 549, tetrazine is cell permeable. It can be coupled directly to a protein of interest using bioorthogonal chemistry and unnatural amino acid technology and has been used in this way to label living primary neurons.
Properties and Photophysical Data: Excitation and emission maxima (λ) are 549 nm and 571 nm, respectively; quantum yield = 0.88; extinction coefficient = 101,000 M-1cm-1; A280 correction factor = 0.169.
Janelia Fluor is a registered trademark of Howard Hughes Medical Institute.
Optical Data for Janelia Fluor® 549, Tetrazine
Emission Color | Yellow |
---|---|
Brightness | |
λabs | 549 nm |
λem | 571 nm |
Extinction Coefficient (ε) | 101,000 M-1cm-1 |
Quantum Yield (φ) | 0.88 |
Closest Laser line | 532 nm |
Reactive Group | Tetrazine |
Reactivity | Copper-free click |
Cell Permeable | Yes |
Correction Factor 280 | 0.169 |
Application | Confocal Microscopy, dSTORM, STED, Live-cell Imaging |
Alternative For | Alexa Fluor® 546, Alexa Fluor® 555, BDY TMR-X, Atto 550, CF 555, TAMRA, Cyanine 3 |
Alexa Fluor® is a registered trademark of Molecular Probes, Inc, a Thermo Fisher Scientific Company.
Plan Your Experiments
Use our spectra viewer to interactively plan your experiments, assessing multiplexing options. View the excitation and emission spectra for our fluorescent dye range and other commonly used dyes.
Spectral ViewerTechnical Data
The technical data provided above is for guidance only.
For batch specific data refer to the Certificate of Analysis.
Tocris products are intended for laboratory research use only, unless stated otherwise.
Additional Information
Product Datasheets
Citations for Janelia Fluor® 549, Tetrazine
The citations listed below are publications that use Tocris products. Selected citations for Janelia Fluor® 549, Tetrazine include:
2 Citations: Showing 1 - 2
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Visualizing the disordered nuclear transport machinery in situ.
Authors: Yu Et al.
Nature 2023;617:162
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Minimal genetically encoded tags for fluorescent protein labeling in living neurons.
Authors: Arsic Et al.
Nat.Commun. 2022;13
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