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Submit ReviewKey information: Thioflavin T is a cell-permeable fluorescent amyloid stain.
Used for: staining of insoluble senile plaques of Aβ in brain tissues, monitoring the kinetics of in vitro polyglutamine amyloid formation of tNhtt-42Q aggregates in a Huntington's disease cell model. Thioflavin T is used to confirm formation of β sheet structure from mutant huntingtin exon-1 aggregates (Ex1Q48) in vitro.
Application: fluorescence microscopy.
Properties and Photophysical Data: Thioflavin T is a cationic benzothiazole. It increases in fluorescence upon strong binding (Ki = 580 nM) to the stacked β sheets of amyloid fibrils. Excitation and emission maxima (λ) are 440 nm and 485 nm, respectively; quantum yield = 0.43; extinction coefficient = 31600 M-1cm-1.
This product is supplied with a high degree of hydration and some residual inorganic salts, the amount of which are batch dependent. Please refer to the Certificate of Analysis to obtain the batch specific Net Product Content.
Emission Color | Blue |
---|---|
λabs | 440 nm |
λem | 485 nm |
Extinction Coefficient (ε) | 31600 M-1cm-1 |
Quantum Yield (φ) | 0.43 |
Cell Permeable | Yes |
Application | Amyloid Stain |
Use our spectra viewer to interactively plan your experiments, assessing multiplexing options. View the excitation and emission spectra for our fluorescent dye range and other commonly used dyes.
Spectral ViewerM. Wt | 318.86 |
Formula | C17H19ClN2S |
Storage | Store at -20°C |
Purity | ≥95% (HPLC) |
CAS Number | 2390-54-7 |
PubChem ID | 16953 |
InChI Key | JADVWWSKYZXRGX-UHFFFAOYSA-M |
Smiles | CC1=CC2=C([N+](C)=C(C3=CC=C(N(C)C)C=C3)S2)C=C1.[Cl-] |
The technical data provided above is for guidance only. For batch specific data refer to the Certificate of Analysis.
Tocris products are intended for laboratory research use only, unless stated otherwise.
Solvent | Max Conc. mg/mL | Max Conc. mM | |
---|---|---|---|
Solubility | |||
DMSO | 1.59 | 5 | |
water | 3.19 | 10 |
The following data is based on the product molecular weight 318.86. Batch specific molecular weights may vary from batch to batch due to the degree of hydration, which will affect the solvent volumes required to prepare stock solutions.
Concentration / Solvent Volume / Mass | 1 mg | 5 mg | 10 mg |
---|---|---|---|
0.1 mM | 31.36 mL | 156.81 mL | 313.62 mL |
0.5 mM | 6.27 mL | 31.36 mL | 62.72 mL |
1 mM | 3.14 mL | 15.68 mL | 31.36 mL |
5 mM | 0.63 mL | 3.14 mL | 6.27 mL |
References are publications that support the biological activity of the product.
Doi et al (2008) RNA-binding protein TLS is a major nuclear aggregate-interacting protein in huntingtin exon 1 with expanded polyglutamine-expressing cells. J.Biol.Chem. 283 6489 PMID: 18167354
Lee et al (2019) Fluorescence chemicals to detect insoluble and soluble amyloid-β aggregates. ACS Chem.Neurosci. 10 2647 PMID: 31009195
Schindler (2021) Small, seeding-competent huntingtin fibrils are prominent aggregate species in brains of zQ175 Huntington's disease knock-in mice. Front.Neurosci. 15 682172 PMID: 34239412
If you know of a relevant reference for Thioflavin T, please let us know.
Keywords: Thioflavin T, Thioflavin T supplier, thioflavint, cell-permeable, fluorescent, amyloid, stain, cationic, benzothiazole, dye, stacked, beta, sheets, fibrils, Fluorescent, Amyloid, B, Probes, 7122, Tocris Bioscience
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