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Sulfo-Cyanine5.5 NHS Ester is a near-infrared fluorescent dye belonging to the cyanine dye family. Its NHS ester group reacts efficiently with primary amines on proteins, antibodies, and other biomolecules under neutral to slightly basic conditions, forming stable amide bonds. The dye exhibits good water solubility and biocompatibility, making it widely used for protein labeling, multicolor fluorescence analysis, and the development of in vivo imaging probes.


| Description | Sulfo-Cyanine5.5 NHS Ester is a near-infrared fluorescent dye belonging to the cyanine dye family. Its NHS ester group reacts efficiently with primary amines on proteins, antibodies, and other biomolecules under neutral to slightly basic conditions, forming stable amide bonds. The dye exhibits good water solubility and biocompatibility, making it widely used for protein labeling, multicolor fluorescence analysis, and the development of in vivo imaging probes. |
| Synonyms | Sulfo-Cyanine5.5 NHS ester |
| Molecular Weight | 1128.40 |
| Formula | C45H44K3N3O16S4 |
| Smiles | O=C(CCCCCN1C2=CC=C3C(C=C(S(=O)([O-])=O)C=C3S(=O)([O-])=O)=C2C(C)(C)C1=CC=CC=CC4=[N+](CC)C5=C(C4(C)C)C(C=C(S(=O)([O-])=O)C=C6S(=O)([O-])=O)=C6C=C5)ON7C(CCC7=O)=O.[K+].[K+].[K+] |
| Storage | Keep away from direct sunlight | Store at -20°C | 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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