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Sulfo-Cyanine5.5 NHS ester is an amine reactive activated ester of sulfonated far red Cyanine5.5 fluorophore, an analog of Cy5.5®. This is a reagent of choice for the labeling of antibodies, sensitive proteins, and others which require reactions in purely aqueous environment, or without any significant additions of organic co-solvents.
The dye is well suitable for non-invasive in vivo NIR imaging, and for the applications requiring low fluorescent background.
| Appearance: | dark blue solid |
| Mass spec M+ increment: | 884.15 |
| Molecular weight: | 1114.37 |
| Molecular formula: | C44H42N3K3O16S4 |
| Solubility: | good in water, DMF, DMSO |
| Quality control: | NMR 1H, HPLC-MS (95%) |
| Storage conditions: | Storage: 12 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: | 675 |
| ε, L⋅mol−1⋅cm−1: | 195000 |
| Emission maximum, nm: | 694 |
| CF260: | 0.09 |
| CF280: | 0.11 |