Cyanine5.5 is a far red emitting dye for in vivo imaging and applications requiring low background. This Cyanine5.5 derivative contains tetrazine moiety that reacts with trans-cyclooctenes, cyclopropenes, and some strained cyclooctynes with the formation of stable conjugates.
This labeling reaction is extremely fast, and can be used in vivo.
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General properties
Appearance: | dark blue solid |
Mass spec M+ increment: | 737.4 |
Molecular weight: | 911.96 |
Molecular formula: | C50H52N7F6OP |
Solubility: | good in DCM, DMF, DMSO |
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: | 684 |
ε, L⋅mol−1⋅cm−1: | 209000 |
Emission maximum, nm: | 710 |
Fluorescence quantum yield: | 0.2 |
CF260: | 0.07 |
CF280: | 0.03 |