Alkyne derivative of Cyanine7, a near infrared fluorophore, analog of Cy7®. The alkyne can be conjugated to a variety of azides via copper-catalyzed Click chemistry.
The dye has limited solubility in water, but it can be successfully conjugated in aqueous buffers with the addition of DMSO or DMF.
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General properties
Appearance: | green powder |
Mass spec M+ increment: | 586.4 |
Molecular weight: | 622.28 |
Molecular formula: | C40H48ClN3O |
Solubility: | good in DMSO, DMF, 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: | 750 |
ε, L⋅mol−1⋅cm−1: | 199000 |
Emission maximum, nm: | 773 |
Fluorescence quantum yield: | 0.3 |
CF260: | 0.022 |
CF280: | 0.029 |