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Key Product Details
| Description: | Far red dye (Reactive group: NHS ester). Applications: super resolution microscopy e.g. dSTORM & STED, confocal and live cell imaging |
| Alternative Names: | JF 669, NHS |
| Chemical Name: | 1-[7-(1-Azetidinyl)-10-[2-Carboxy-5-[(2-(2,5-dioxopyrrolidin-1-yl)oxy)-2-oxoethyl]thio-3,4,6-trifluorophenyl]-9,9-dimethyl-9-silaanthracen-2(9H)-ylidene]azetidinium, inner salt |
| Purity: | ≥90% (HPLC) |
| Molecular Weight: | 693.77 |
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Biological Activity for Janelia Fluor® 669, SE
Janelia Fluor® 669, SE is a red fluorescent dye; supplied as an NHS ester for coupling to primary amine groups. NHS ester can be converted to relevant substrate for use in self-labeling tag systems, e.g. HaloTag® and SNAP-tag®. Suitable for confocal fluorescent imaging and super resolution microscopy (SRM) techniques, such as dSTORM (live and fixed cells). Cell permeable. Excitation maximum = 669 nm; emission maximum = 682 nm; Quantum yield = 0.37; Extinction coefficient = 116,000 M-1cm-1; Correction factor = 0.0430. Retains 97% fluorescence after 30 bleaching cycles.
Please see the protocol for further information on protein/antibody labeling and conjugation.
We also offer Janelia Fluor® conjugated antibodies and custom conjugation services with our sister company Novus Biologicals.
HaloTag is a trademark of Promega Corporation, and SNAP-tag is a trademark of New England BioLabs, Inc.
Licensing Information
Sold under license from the Howard Hughes Medical Institute, Janelia Research Campus
Applications on Tubulin
Application of Janelia Fluor® 669, SE dye on Tubulin; Left: Microtubules were labeled with anti-α-tubulin primary antibodies. The secondary antibodies were conjugated to JF 669. Maximum intensity projection of confocal z-stack, recorded with an Olympus FV1200 confocal microscope, using 638 nm laser line forJF 669. Right: Enlarged portion of left-hand image.
Images kindly provided by Dr Kirstin Elgass, Monash University
Optical Data for Janelia Fluor® 669, SE
| Emission Color | Far Red |
|---|---|
| Brightness | |
| λabs | 669 nm |
| λem | 682 nm |
| Extinction Coefficient (ε) | 116,000 M-1cm-1 |
| Quantum Yield (φ) | 0.37 |
| Closest Laser line | 640 nm |
| Reactive Group | NHS ester |
| Reactivity | Primary amines |
| Cell Permeable | Yes |
| Correction Factor 280 | 0.043 |
| Application | Confocal fluorescent imaging, SRM |
| Alternative For | Alexa Fluor® 660, Atto 655, Atto 665, CF660R |
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.
Spectra Viewer
Citations for Janelia Fluor® 669, SE
Please visit our Instrument Citation Database to search our collection of scientific articles that feature our instruments.
