Sulfo-Cyanine5.5 is a far red emitting fluorophore. It contains four sulfo groups, which provide great hydrophilicity, and aqueous solubility. The reagent can be conjugated with a variety of azides by means of copper catalyzed Click chemistry reaction.
![](\"https://www.ebiomall.com/images/201709/sulfo-cy55-alkyne.png\")
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General properties
| Appearance: | dark blue solid |
| Molecular weight: | 1054.36 |
| Molecular formula: | C43H42N3K3O13S4 |
| IUPAC name: | (E)-4-[(2E,4E)-5-{3,3-Dimethyl-5-[6-oxo-6-(2-propynylamino)hexyl]-10-(oxysulfonyl)-12-sulfo-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 tripotassium 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. |
Spectral properties
| Excitation maximum, nm: | 673 |
| ε, L⋅mol−1⋅cm−1: | 195000 |
| Emission maximum, nm: | 691 |
| CF260: | 0.09 |
| CF280: | 0.11 |
