Cyanine5.5 (Cy5.5® analog) amine derivative. The dye contains a free amine group which can be conjugated with a variety of functionalities, including NHS esters, and epoxides.
Cyanine5.5 is a far red dye which works fine for live organism imaging, and applications requiring low fluorescence background.
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General properties
| Appearance: | dark blue powder | 
| Molecular weight: | 753.88 | 
| Molecular formula: | C46H58Cl2N4O | 
| Solubility: | moderate solubility in water, good in polar organic solvents (DMF, DMSO, alcohols) | 
| 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: | 684 | 
| ε, L⋅mol−1⋅cm−1: | 209000 | 
| Emission maximum, nm: | 710 | 
| Fluorescence quantum yield: | 0.2 | 
| CF260: | 0.07 | 
| CF280: | 0.03 |