SiRhius® 650 carboxylic acid
| Artikel-Nr. | Packungseinheit | Preis | Vorlaufzeit | Jetzt kaufen |
|---|---|---|---|---|
| 11S90 | 1 mg |
$236.00
|
Auf Lager | |
| 31S90 | 10 mg |
$1240.00
|
Auf Lager |
SiRhius® 650 is a silicon rhodamine (SiR) family fluorophore that exhibits far-red fluorescence. The dye is characterized by a high extinction coefficient, resistance to fading, and minimal photo- and cytotoxicity, making it indispensable for super-resolution microscopy (STED, SIM, PALM/STORM) and long-term live-cell imaging. Unlike many cyanine dyes, SiRhius 650 is stable under alkaline conditions.
SiRhius 650 carboxylic acid can be used as a reference standard and, after activation, for the synthesis of SiRhius 650-containing biomolecules (proteins, peptides, amino-modified oligonucleotides, etc.).
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General properties
| Appearance: | blue crystals |
| Molecular weight: | 472.61 |
| CAS number: | 1426090-03-0 |
| Molecular formula: | C27H30N2O4Si |
| IUPAC name: | 3,7-bis(dimethylamino)-5,5-dimethyl-3'-oxo-3'H,5H-spiro[dibenzo[b, e]siline-10,1'-isobenzofuran]-6'-carboxylic acid |
| Solubility: | dichloromethane, ethyl acetate, methanol, acetonitrile, DMF |
| Quality control: | NMR 1H and HPLC-MS (95+%) |
| Storage conditions: | 24 months after receival at -20°C in the dark. Transportation: at room temperature for up to 3 weeks. Desiccate. |
| Sicherheitsdatenblatt: | herunterladen |
| Product specifications |
Spectral properties
| Excitation/absorption maximum, nm: | 646 |
| ε, L⋅mol−1⋅cm−1: | 112000 |
| Emission maximum, nm: | 669 |
| Fluorescence quantum yield: | 0.57 |
| CF260: | 0.07 |
| CF280: | 0.02 |


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