ROX azide, 6-isomer

Cat. # Quantity Price Lead time
A2230 1 mg $110 in stock
B2230 5 mg $165 in stock
C2230 10 mg $210 in stock
D2230 25 mg $285 in stock
E2230 50 mg $495 in stock
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ROX azide is an alkyne-reactive derivative of ROX (Rhodamine X, Rhodamine 101) dye. ROX is a red-emitting fluorophore possessing high brightness and fluorescence quantum yield. This reagent is a pure 6-isomer. It is used for labeling alkyne and cycloalkyne-containing biomolecules via copper-catalyzed and copper-free click chemistry reactions.

Absorption and emission spectra of ROX

Absorption and emission spectra of ROX

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General properties

Appearance: green powder
Molecular weight: 616.72
CAS number: 1422178-12-8
Molecular formula: C36H36N6O4
Solubility: good in polar organic solvents (DMF, DMSO, alcohols), low in water
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: 570
ε, L⋅mol−1⋅cm−1: 93000
Emission maximum, nm: 591
Fluorescence quantum yield: 1.0
CF260: 0.62
CF280: 0.49

Product citations

  1. Feltes, M.; Moores, S.; Gale, S.E.; Krishnan, K.; Mydock-McGrane, L.; Covey, D.F.; Ory, D.S.; Schaffer, J.E. Synthesis and characterization of diazirine alkyne probes for the study of intracellular cholesterol trafficking. Journal of Lipid Research, 2019, 60(3), 707–716. doi: 10.1194/jlr.D091470
  2. Okholm, A.; Kjems, J.; Astakhova, K. Fluorescence detection of natural RNA using rationally designed "clickable" oligonucleotide probes. RSC Advances, 2014, 4(86), 45653–45656. doi: 10.1039/c4ra07165d
  3. Liboska, R.; Ligasová, A.; Strunin, D.; Rosenberg, I.; Koberna, K. Most Anti-BrdU Antibodies React with 2'-Deoxy-5-Ethynyluridine ‒ The Method for the Effective Suppression of This Cross-Reactivity. PLoS ONE, 2012, 7(12), e51679. doi: 10.1371/journal.pone.0051679
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