ROX alkyne, 5-isomer
Cat. # | Quantity | Price | Lead time | Buy this product |
---|---|---|---|---|
A12B0 | 1 mg | $110.00 | in stock | |
B12B0 | 5 mg | $210.00 | in stock | |
C12B0 | 10 mg | $310.00 | in stock | |
D12B0 | 25 mg |
$410.00
|
in stock | |
E12B0 | 50 mg |
$695.00
|
in stock | |
F12B0 | 100 mg |
$1190.00
|
in stock |
ROX alkyne is an alkyne derivative of the bright red-emitting dye ROX (Rhodamine X, Rhodamine 101). Due to its quantum yield approaching unity, ROX is a popular dye for qPCR and microscopy applications. It is used for fluorescent labeling of azide-containing biomolecules via copper-catalyzed click reaction. This product is a pure 5-isomer of ROX.
ROX is prone to oxidation; therefore, its derivatives should preferably be stored in an inert atmosphere.
Absorption and emission spectra of ROX

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Water soluble cyanine dye with bright fluorescence and high extinction coefficient. Contains an amino group for the conjugation with electrophiles and enzymatic transamination labeling.General properties
Appearance: | purple solid |
Mass spec M+ increment: | 571.3 |
Molecular weight: | 571.66 |
CAS number: | 2264016-88-6 |
Molecular formula: | C36H33N3O4 |
Solubility: | good in DMSO, DMF, methanol, ethanol |
Quality control: | NMR 1H, HPLC-MS (95%) |
Storage conditions: | Storage: 24 months after receival at -20°C in the dark. Transportation: at room temperature for up to 3 weeks. Avoid prolonged exposure to light. Desiccate. |
MSDS: | Download |
Product specifications |
Spectral properties
Excitation/absorption maximum, nm: | 570 |
ε, L⋅mol−1⋅cm−1: | 93000 |
Emission maximum, nm: | 591 |
Fluorescence quantum yield: | 1.00 |
CF260: | 0.62 |
CF280: | 0.49 |
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