Cyanine5.5 dye, free acid form, unactivated. The dye can be considered non-reactive for most applications. It can be used as a control or reference sample, and for instrument calibration.
Pre-activated NHS ester for the labeling of amine groups is also available.
| Appearance: | dark blue powder |
| Molecular weight: | 619.23 |
| Molecular formula: | C40H43ClN2O2 |
| CAS number: | 1144107-80-1, 1256349-47-9 |
| Solubility: | soluble in organic solvents (DMSO, DMF, dichloromethane), low solubility in water |
| Quality control: | NMR 1H (95%) and 13C, TLC |
| 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 |
| Extinction coefficient at excitation maximum, Lmol-1cm-1: | 209000 |
| Emission maximum, nm: | 707 |
| Fluorescence quantum yield: | 0.2 |
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