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Janelia Fluor 669, SE (JF669, SE), a red fluorescent dye, reacts directly with thiol-containing HaloTag ligand under mild conditions (DIEA, DMF) to produce a JF669 HaloTag ligand in a single step (Ex = 669 nm; Em = 682 nm).

| Pack Size | Price | Availability | Quantity |
|---|---|---|---|
| 2 mg | $1,620 | 35 days |
| Description | Janelia Fluor 669, SE (JF669, SE), a red fluorescent dye, reacts directly with thiol-containing HaloTag ligand under mild conditions (DIEA, DMF) to produce a JF669 HaloTag ligand in a single step (Ex = 669 nm; Em = 682 nm). |
| In vitro | JF669 rapidly transforms into a thioether product in less than 5 minutes to completion when in organic solvents, primarily assuming the closed form[1]. Additionally, JF669 exhibits superior photostability, maintaining 97% of its fluorescence intensity after an equivalent number of cycles[1]. |
| Synonyms | JF669,NHS, JF669, SE, Janelia Fluor? 669, SE |
| Molecular Weight | 693.77 |
| Formula | C34H30F3N3O6SSi |
| Cas No. | 2127150-20-1 |
| Relative Density. | no data available |
| Storage | keep away from direct sunlight | Powder: -20°C for 3 years | In solvent: -80°C for 1 year | Shipping with blue ice/Shipping at ambient temperature. |

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