Cyanine3B carboxylic acid
| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 2321-1mg | 1 mg | $125 | in stock | |
| 2321-5mg | 5 mg | $325 | in stock | |
| 2321-25mg | 25 mg |
$850
|
in stock | |
| 2321-50mg | 50 mg |
$1490
|
in stock | |
| 2321-100mg | 100 mg |
$2450
|
in stock |
Cyanine3B is a yellow-emitting cyanine dye that is an improved version of the Cyanine3 fluorophore with significantly higher fluorescence quantum yield and photostability.
Cyanine3B carboxylic acid is a non-reactive form of Cyanine3B that can be used as a reference standard in experiments using conjugates of this fluorophore. Cyanine3B carboxylic acid can also be used to synthesize activated esters or modified with hydrazines, hydroxylamines, and amines for subsequent conjugation with biomolecules.
Cyanine3B absorbance and emission spectra
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| Appearance: | dark red powder |
| Molecular weight: | 560.67 |
| CAS number: | 228272-69-3 |
| Molecular formula: | C31H32N2O6S |
| Solubility: | good in DMF, DMSO |
| 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. |
| MSDS: | Download |
| Product specifications |
Spectral properties
| Excitation/absorption maximum, nm: | 559 |
| ε, L⋅mol−1⋅cm−1: | 121000 |
| Emission maximum, nm: | 571 |
| Fluorescence quantum yield: | 0.68 |
| CF260: | 0.044 |
| CF280: | 0.077 |
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