Cyanine3B NHS ester
Cat. # | Quantity | Price | Lead time | Buy this product |
---|---|---|---|---|
19320 | 1 mg | $140.00 | in stock | |
29320 | 5 mg | $340.00 | in stock | |
49320 | 25 mg |
$990.00
|
in stock | |
59320 | 50 mg |
$1690.00
|
in stock | |
69320 | 100 mg |
please inquire
|
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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Cyanine3 NHS ester
Amine-reactive Cyanine3 dye NHS ester.Cyanine3B carboxylic acid
A Cyanine3B derivative with unactivated free carboxy group for use as a control, calibration, and conjugation after pre-activation.Cyanine5 NHS ester
Amine-reactive Cyanine5 activated ester for the labeling of proteins, peptides, and other molecules.General properties
Appearance: | dark red powder |
Molecular weight: | 657.75 |
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: | 566 |
ε, L⋅mol−1⋅cm−1: | 137000 |
Emission maximum, nm: | 578 |
Fluorescence quantum yield: | 0.92 |
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