Cyanine3B azide
Cat. # | Quantity | Price | Lead time | Buy this product |
---|---|---|---|---|
19330 | 1 mg | $140 | in stock | |
29330 | 5 mg | $340 | in stock | |
49330 | 25 mg |
$990
|
in stock | |
59330 | 50 mg |
$1690
|
in stock | |
69330 | 100 mg |
$3100
|
in stock |
Cyanine3B dye azide for сlick сhemistry conjugation with terminal alkynes via a copper-catalyzed click reaction or strained cyclooctynes via a copper-free click reaction.
Cyanine3B is a yellow-emitting cyanine dye that is an improved version of the Cyanine3 fluorophore with significantly higher fluorescence quantum yield and photostability. Due to the fixed conformation, Cyanine3B has the highest emission quantum yield compared to other dyes of this wavelength.
This is a sulfonated dye and can be used for efficient labeling in water media.
Absorbance and emission spectra of Cyanine3B

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Appearance: | dark red powder |
Molecular weight: | 642.78 |
CAS number: | 1914113-85-1 |
Molecular formula: | C34H38N6O5S |
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. Avoid prolonged exposure to light. |
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 |
