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Cy3B maleimide is a mono-reactive dye containing a maleimide group, designed to selectively and efficiently attach the Cyanine3 fluorophore (an analog of Cy3) to proteins and peptides with cysteine residues, as well as other thiolated molecules, such as thiol-containing oligonucleotides. Cy3B is an enhanced version of the Cy3 dye, offering significantly improved fluorescence quantum yield and photostability.

| 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 | Cy3B maleimide is a mono-reactive dye containing a maleimide group, designed to selectively and efficiently attach the Cyanine3 fluorophore (an analog of Cy3) to proteins and peptides with cysteine residues, as well as other thiolated molecules, such as thiol-containing oligonucleotides. Cy3B is an enhanced version of the Cy3 dye, offering significantly improved fluorescence quantum yield and photostability. |
| Molecular Weight | 682.785 |
| Formula | C37H38N4O7S |
| Cas No. | 926905-86-4 |
| Smiles | O=C1C=CC(=O)N1CCNC(=O)CC=2C=CC3=C(C2)C(C=4C5=CC6=C7N(C8=CC=C(C=C8C7(C)C)S(=O)(=O)[O-])CCC6OC5CC[N+]34)(C)C |
| 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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