Thiazole Orange

Cat. # Quantity Price Lead time
3595-1mL 1 mL, 10 mM/DMSO $80 in stock
3595-250mg 250 mg $125 in stock
3595-1g 1 g $250 in stock
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Thiazole Orange is an asymmetric cyanine dye whose fluorescence highly depends on the local environment. Thiazole Orange is essentially dark in solution; however, its fluorescence increases a  thousandfold when Thiazole Orange is introduced into double-stranded DNA and RNA (dsDNA or dsRNA).

The maximum absorption of Thiazole Orange in complex with DNA is 509 nm, and the maximum emission is 532 nm.

Thiazole Orange solution is widely used for determining the percentage of reticulocytes in human peripheral blood with microscopy and flow cytometry. We also offer the ready-to-use solution of Thiazole Orange LumiCell Reticulocyte Stain for this purpose.

Absorption and emission spectra of Thiazole Orange

Absorption and emission spectra of Thiazole Orange

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General properties

Appearance: orange powder / solution
Molecular weight: 432.33
CAS number: 2394903-71-8; 24147-36-2; 107091-89-4 (p-toluenesulfonate)
Molecular formula: C19H17IN2S
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.
MSDS: Download
Product specifications

Spectral properties

Excitation/absorption maximum, nm: 509
Emission maximum, nm: 532
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