Janelia Fluor® 646, Tetrazine
Tocris Bioscience, part of Bio-Techne | Catalog # 7279
Key Product Details
| Description: | Red dye (Reactive group: tetrazine). Application: flow cytometry, confocal microscopy, super-resolution microscopy (SRM) including dSTORM & STED. Suitable for live cell imaging |
| Alternative Names: | JF646 |
| Chemical Name: | 4-((4-(1,2,4,5-Tetrazin-3-yl)benzyl)carbamoyl)-2-(3-(azetidin-1-ium-1-ylidene)-7-(azetidin-1-yl)-5,5-dimethyl-3,5-dihydrodibenzo[b,e]silin-10-yl)benzoate |
| Purity: | ≥90% (HPLC) |
| Molecular Weight: | 665.83 |
Biological Activity for Janelia Fluor® 646, Tetrazine
Key Information: Janelia Fluor® 646, Tetrazine is a red fluorescent dye; supplied with a tetrazine reactive handle for copper-free click chemistry. Suitable for live cell imaging.
Application: Suitable for flow cytometry, confocal microscopy, super-resolution microscopy (SRM) techniques including dSTORM (in both live and fixed cells) and STED. Can be multiplexed for two-color imaging with Janelia Fluor;® 549 Tetrazine (Cat. No. 6502). Cell-permeable.
Properties and Photophysical Data: Excitation and emission maxima (λ) are 646 nm and 664 nm, respectively; quantum yield = 0.54; extinction coefficient = 152,000 M-1cm-1 (measured in ethanol plus 0.1% TFA); A280 correction factor = 0.19; lactone-zwitterion equilibrium constant (KL-Z) = 0.0012.
Janelia Fluor is a registered trademark of Howard Hughes Medical Institute.
Licensing Information
Sold under license from the Howard Hughes Medical Institute, Janelia Research Campus
Optical Data for Janelia Fluor® 646, Tetrazine
| Emission Color | Red |
|---|---|
| Brightness | |
| λabs | 646 nm |
| λem | 664 nm |
| Extinction Coefficient (ε) | 152,000 M-1cm-1 |
| Quantum Yield (φ) | 0.54 |
| Closest Laser line | 647 nm |
| Reactive Group | Tetrazine |
| Reactivity | Copper-free click |
| Cell Permeable | Yes |
| Correction Factor 280 | 0.19 |
| Application | Confocal Microscopy, SRM, dSTORM, STED, Flow Cytometry |
| Alternative For | Alexa Fluor® 647, Atto 647, Atto 647N, CF640R, CF647, Cyanine 5 |
Alexa Fluor® is a registered trademark of Molecular Probes, Inc, a Thermo Fisher Scientific Company.
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