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 |