Cyanine3B NHS ester
| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 19320 | 1 mg | $140 | in stock | |
| 29320 | 5 mg | $340 | in stock | |
| 49320 | 25 mg |
$990
|
in stock | |
| 59320 | 50 mg |
$1690
|
in stock | |
| 69320 | 100 mg |
$3100
|
in stock |
Cyanine3B NHS ester is a reactive dye for the specific labeling of amino-groups in biomolecules — antibodies, peptides, or oligonucleotides. Cyanine3B is an improved version of yellow Cyanine3 dye with significantly increased fluorescence quantum yield and photostability.
Cyanine3B absorbance and emission spectra
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A heterobifunctional linker with trans-cyclooctene and NHS ester groups flanking PEG4 (tetraethylene glycol) for labeling of antibodies, proteins, and other primary amine-containing biomolecules.AF 488 carboxylic acid
AF 488 carboxyl derivative can be used as a reference standard or for synthesizing various AF488 esters.General properties
| Appearance: | dark red powder |
| Molecular weight: | 657.75 |
| CAS number: | 228272-52-4 |
| Molecular formula: | C35H35N3O8S |
| Solubility: | good in DMF, DMSO |
| Quality control: | NMR 1H and HPLC-MS (95+%) |
| Storage conditions: | 12 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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