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Cy5 (Sulfo-Cyanine5) is a reactive dye for the labeling of amino-groups in peptides, proteins, and oligonucleotides. This dye requires small amount of organic co-solvent (such as DMF or DMSO) to be used in labeling reaction. This reagent is ideal for very cost-efficient labeling of soluble proteins, as well as all kinds of peptides and oligonucleotides. This reagent also works well in organic solvents for small molecule labeling. Excitation (nm):649, Emission (nm): 670.
| Molecular Weight | 656.81 |
| Formula | C33H40N2O8S2 |
| CAS Number | 146368-11-8 |
| Solubility (25°C) | DMSO 120 mg/mL Water 25 mg/mL |
| Storage | 2-8°C, protect from light |
| Related Fluorescent Dye Products |
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| PGSK diacetate (5/6-mixture)
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| Dextran-Rhodamine B
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| N-Succinimidyl 6-(2,4-Dinitroanilino)hexanoate
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