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Cyanine5.5 phosphoramidite, 5'-terminal
| Artikel-Nr. | Packungseinheit | Preis | Vorlaufzeit | Jetzt kaufen |
|---|---|---|---|---|
| 2680-1g | 1 g |
$690.00
|
21 Tagen. | |
| 2680-10g | 10 g |
auf Anfrage
|
21 Tagen. |
Cyanine5.5 is a fluorophore with the emission in far red range of the spectrum. This dye is useful for multiplex qPCR. Commercial six-channel qPCR instruments often have a channel for Cyanine5.5.
This phosphoramidite can be used for the synthesis of 5'-labeled oligonucleotides by direct labeling in oligonucleotide synthesizer.
The structure of phosphoramidite functional group that is attached to a secondary carbon atom provides extra stability against Arbuzov rearrangement. This helps maintaining coupling performance over a longer storage time in oligonucleotide synthesizer, compared to phosphoramidites derived of primary alcohols.
General properties
| Appearance: | dark colored solid |
| Molecular weight: | 916.61 |
| Molecular formula: | C55H71N5ClO3P |
| Quality control: | NMR 1H, 31P, HPLC-MS (85%) |
| 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. |
| Sicherheitsdatenblatt:: | herunterladen |
| Product specifications |
Spectral properties
| Excitation/absorption maximum, nm: | 694 |
| ε, L⋅mol−1⋅cm−1: | 198000 |
| Emission maximum, nm: | 710 |
| Fluorescence quantum yield: | 0.2 |
| CF260: | 0.07 |
| CF280: | 0.03 |
Oligo synthesis details
| Diluent: | acetonitrile |
| Coupling conditions: | 6 min coupling time recommended |
| Deprotection conditions: | recommended 48 h at +4°C or ultramild protective groups; 24 h at rt possible |
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