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UBQ-3 NHS ester is a fluorescent agent featuring a terminal NHS ester group. It has a broad quenching range of 620–730 nm, enabling it to be used as an acceptor for fluorescence resonance energy transfer (FRET) applications with far-red to near-infrared dyes, such as Cy5, Cy5.5, Alexa Fluor 633, 647, 700. The NHS ester can label proteins, amine-modified oligonucleotides, and other amine-containing primary amines (-NH2).

| Pack Size | Price | USA Warehouse | Global Warehouse | Quantity |
|---|---|---|---|---|
| 10 mg | Inquiry | 10-14 weeks | 10-14 weeks | |
| 50 mg | Inquiry | 10-14 weeks | 10-14 weeks |
| Description | UBQ-3 NHS ester is a fluorescent agent featuring a terminal NHS ester group. It has a broad quenching range of 620–730 nm, enabling it to be used as an acceptor for fluorescence resonance energy transfer (FRET) applications with far-red to near-infrared dyes, such as Cy5, Cy5.5, Alexa Fluor 633, 647, 700. The NHS ester can label proteins, amine-modified oligonucleotides, and other amine-containing primary amines (-NH2). |
| Molecular Weight | 645.75 |
| Formula | C37H39N7O4 |
| Cas No. | 2516243-92-6 |
| Smiles | N(CC)(CC)C=1C=C2N(C=3C(NC2=CC1)=CC=C(/N=N/C4=CC=C(N(CCCC(ON5C(=O)CCC5=O)=O)C)C=C4)C3)C6=CC=CC=C6 |
| 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. |
Dissolve 2 mg of the compound in 100 μL DMSO
to obtain a stock solution at a concentration of 20 mg/mL . If the required concentration exceeds the compound's known solubility, please contact us for technical support before proceeding.
1) Add 100 μL of the DMSO
stock solution to 400 μL PEG300
and mix thoroughly until the solution becomes clear.
2) Add 50 μL Tween 80 and mix well until fully clarified.
3) Add 450 μL Saline,PBS or ddH2O
and mix thoroughly until a homogeneous solution is obtained.
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