Sulfo-Cyanine5.5 is a water soluble cyanine dye for far red / NIR applications such as in vivo imaging. The dye possesses four sulfonate groups that render it highly hydrophilic and water soluble. As well as other cyanines, sulfo-Cyanine5.5 has an outstanding extinction coefficient that makes it a bright fluorescent label for the far red region.
This is an amine-containing fluorescent dye. The amine group is separated from the fluorophore by a relatively long linker that facilitates conjugation. The aliphatic primary amine group can be coupled with various electrophiles (activated esters, epoxides, etc), and also be used in enzymatic transamination labeling.
Appearance: | dark blue solid |
Molecular weight: | 1077.41 |
Molecular formula: | C46H54K2N4O13S4 |
IUPAC name: | (E)-4-[(2E,4E)-5-{5-[6-(6-Aminohexylamino)-6-oxohexyl]-3,3-dimethyl-10,12-bis(oxysulfonyl)-5-azatricyclo[7.4.0.02,6]trideca-1,4,6,8,10,12-hexaen-4-yl}-2,4-pentadienylidene]-3,3-dimethyl-5-methyl-5-azatricyclo[7.4.0.02,6]trideca-1,6,8,10,12-pentaene-10,12-disulfonic acid dipotassium salt |
Solubility: | good in water, DMF, DMSO |
Quality control: | NMR 1H, HPLC-MS (95%) |
Storage conditions: | Storage: 24 months after receival at -20°C in the dark. Transportation: at room temperature for up to 3 weeks. Avoid prolonged exposure to light. Desiccate. |
Excitation maximum, nm: | 673 |
ε, L⋅mol−1⋅cm−1: | 195000 |
Emission maximum, nm: | 691 |
CF260: | 0.09 |
CF280: | 0.11 |
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