Janelia Fluor® 669, NHS ester
Tocris Bioscience, part of Bio-Techne | Catalog # 6420
Key Product Details
| Description: | Far red dye (Reactive group: NHS ester). Application: confocal miocrocopy, super resolution microscopy including dSTORM & STED. Suitable for 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 |
Biological Activity for Janelia Fluor® 669, NHS ester
Key Information: Janelia Fluor® 669, NHS ester is a red fluorescent dye; supplied with an NHS ester reactive group for the labeling of primary amines. Suitable for live cell imaging.
Application: Suitable for confocal microscopy, super resolution microscopy (SRM) techniques including dSTORM (in both live and fixed cells) and STED. Cell permeable.
Properties and Photophysical Data: NHS ester can be converted to relevant substrate for use in self-labeling tag systems, e.g. HaloTag® and SNAP-tag®. Excitation and emission maxima (λ) are 669 nm and 682 nm, respectively; quantum yield = 0.37; extinction coefficient = 116,000 M-1cm-1; A280 correction factor = 0.043. 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.
HaloTag is a trademark of Promega Corporation, and SNAP-tag is a trademark of New England BioLabs, Inc.
Janelia Fluor is a registered trademark of Howard Hughes Medical Institute.
This product has been recently renamed. The previous name for this product was Janelia Fluor® 669, SE.
Licensing Information
Sold under license from the Howard Hughes Medical Institute, Janelia Research Campus
Optical Data for Janelia Fluor® 669, NHS ester
| 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 Microscopy, Super Resolution Microscopy (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.
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Applications on Tubulin for Janelia Fluor® 669, NHS ester. Application of Janelia Fluor® 669, NHS ester dye on Tubulin; Left: Microtubules were labeled with anti-alpha -tubulin primary antibodies. The secondary antibodies were conjugated to Janelia Fluor® 669, NHS ester. Maximum intensity projection of confocal z-stack, recorded with an Olympus FV1200 confocal microscope, using 638 nm laser line for JF 669. Right: Enlarged portion of left-hand image. Images kindly provided by Dr Kirstin Elgass, Monash University. |
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