Lumiprobe 磺酸基CY3.5 NHS酯 sulfo-Cyanine3.5 NHS ester
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Cyanine3.5 is a fluorescent dye with absorption and emission intermediate between Cyanine3 and Cyanine5. Sulfonated version contains four sulfo groups which ensure high solubility and hydrophilicity of the fluorophore and labeled conjugates.
The NHS ester reactive group allows to label primary and secondary amine groups.
General properties
Appearance: | deep purple powder |
Molecular weight: | 1088.33 |
CAS number: | 2231670-91-8 (without cation) |
Molecular formula: | C42H40N3K3O16S4 |
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. |
Spectral properties
Excitation maximum, nm: | 576 |
ε, L⋅mol−1⋅cm−1: | 139000 |
Emission maximum, nm: | 603 |
Fluorescence quantum yield: | 0.11 |
CF260: | 0.16 |
CF280: | 0.17 |