Janelia Fluor® 635, Haloalkane New
Chemical Name: 4-((2-(2-((6-Chlorohexyl)oxy)ethoxy)ethyl)carbamoyl)-2-(3-(3-fluoroazetidin-1-ium-1-ylidene)-7-(3-fluoroazetidin-1-yl)-5,5-dimethyl-3,5-dihydrodibenzo[b,e]silin-10-yl)benzoate
Purity: ≥95%
Biological Activity
Key Information: Janelia Fluor® 635, Haloalkane is a red cell-permeable fluorogenic fluorescent dye with a chloroalkane handle.Application: Live-cell imaging as a self-labeling tag substrate. Suitable for confocal microscopy, light sheet microscropy, super resolution microscopy (SRM) techniques including dSTORM (in both live and fixed cells). Stable to fixation. Cell permeable.
Properties and Photophysical Data: Janelia Fluor® 635, Haloalkane shows a high degree of fluorogenicity. Excitation and emission maxima (λ) are 635 nm and 652 nm, respectively; quantum yield = 0.56; extinction coefficient = 167,000 M-1cm-1 (measured in ethanol or TFE plus 0.1% TFA); lactone-zwitterion equilibrium constant (KL-Z) <0.0001. Turn-on ratio in vitro A/A0 = 113, F/F0 = 67. Exhibits low non-specific background staining.
Janelia Fluor is a registered trademark of Howard Hughes Medical Institute.
Optical Data for Janelia Fluor® 635, Haloalkane
| Emission Color | Red |
|---|---|
| Brightness | |
| λabs | 635 nm |
| λem | 652 nm |
| Extinction Coefficient (ε) | 167000 M-1cm-1 |
| Quantum Yield (φ) | 0.56 |
| Closest Laser line | 635 nm |
| Cell Permeable | Yes |
| Application | Confocal Microscopy, Super Resolution Microscopy (SRM) |
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Technical 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
Background References
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A general method to fine-tune fluorophores for live-cell and in vivo imaging.
Grimm et al.
Nat.Methods, 2017;14:987
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