Sulfo-Cyanine5.5 mal,水溶Cy5.5 mal
Sulfo-Cyanine5.5 dye is a water soluble far red to NIR emitting dye which is very hydrophilic due to the presence of four sulfo groups. Sulfo-Cyanine5.5 derivatives exhibit high water solubility. The dye is a perfect choice for the labeling of sensitive proteins, nanoparticles, and highly hydrophylic biopolymers.
This maleimide is a thiol reactive dye that selectively labels cysteine residues. Disulfide bonds of native proteins should be reduced with an appropriate reducing agent, such as TCEP, according to our recommended protocol.
General properties
Appearance: | dark colored solid |
Mass spec M+ increment: | 1024.2 |
Molecular weight: | 1139.43 |
Molecular formula: | C46H45K3N4O15S4 |
Solubility: | good in water, DMSO, DMF |
Quality conrol: | 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. |
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Spectral properties
Excitation maximum, nm: | 673 |
ε, L⋅mol−1⋅cm−1: | 195000 |
Emission maximum, nm: | 691 |
CF260: | 0.09 |
CF280: | 0.11 |
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