Date published: 2026-6-15

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Thiazolyl Blue (CAS 298-93-1)

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Alternate Names:
Thiazolyl Blue is also known at MTT, MMT Tetrazolium, and Thiazolyl Blue Tetrazolium Bromide
Application:
Thiazolyl Blue may be used in measurement of cell proliferation and is a membrane-permeable dye reduced by mitochondrial enzymes
CAS Number:
298-93-1
Purity:
≥98%
Molecular Weight:
414.32
Molecular Formula:
C18H16BrN5S
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.
* Refer to Certificate of Analysis for lot specific data.

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Thiazolyl Blue is a membrane-permeable yellow dye that is reduced by mitochondrial reductases in living cells to form the dark blue product, MTT Formazan (sc-215399). Spectrophotometric measurement of MTT Formazan at 540 or 570 nm allows quantitation of cell viability. Thiazolyl Blue is used as a direct indicator of cytotoxicity (such as for screening cancer drugs) and apoptosis. It is also an electron acceptor used for studying NADP-dependent dehydrogenases.

For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.

Alexa Fluor® is a trademark of Molecular Probes Inc., OR., USA

LI-COR® and Odyssey® are registered trademarks of LI-COR Biosciences


Thiazolyl Blue (CAS 298-93-1) References

  1. Toxicity hazard of organophosphate insecticide malathion identified by in vitro methods.  |  Jira, D., et al. 2012. Neuro Endocrinol Lett. 33 Suppl 3: 53-9. PMID: 23353844
  2. Cytotoxic, genotoxic/antigenotoxic and mutagenic/antimutagenic effects of the venom of the wasp Polybia paulista.  |  Hoshina, MM., et al. 2013. Toxicon. 72: 64-70. PMID: 23796727
  3. Compounds used to produce cloned animals are genotoxic and mutagenic in mammalian assays in vitro and in vivo.  |  Oliveira, RJ., et al. 2014. Braz J Med Biol Res. 47: 287-98. PMID: 24714812
  4. Cytotoxic and genotoxic effects of ethanolic extract of Euphorbia hyssopifolia L. on HepG2 cells.  |  Araújo, Sde S., et al. 2015. J Ethnopharmacol. 170: 16-9. PMID: 25937254
  5. Inositol hexaphosphate suppresses growth and induces apoptosis in HT-29 colorectal cancer cells in culture: PI3K/Akt pathway as a potential target.  |  Liu, G., et al. 2015. Int J Clin Exp Pathol. 8: 1402-10. PMID: 25973024
  6. Cytotoxic and genotoxic effects of two hair dyes used in the formulation of black color.  |  Tafurt-Cardona, Y., et al. 2015. Food Chem Toxicol. 86: 9-15. PMID: 26404083
  7. CRISPR-Cas9 Mediated NOX4 Knockout Inhibits Cell Proliferation and Invasion in HeLa Cells.  |  Jafari, N., et al. 2017. PLoS One. 12: e0170327. PMID: 28099519
  8. Megastigmane glucosides isolated from Dichrocephala benthamii.  |  Song, B., et al. 2017. Chin J Nat Med. 15: 288-291. PMID: 28527514
  9. Recombinant elastin-based nanoparticles for targeted gene therapy.  |  Monfort, DA. and Koria, P. 2017. Gene Ther. 24: 610-620. PMID: 28681841
  10. Optimum morphology of gold nanorods for light-induced hyperthermia.  |  Morales-Dalmau, J., et al. 2018. Nanoscale. 10: 2632-2638. PMID: 29355866
  11. Evaluation of the potential agricultural use of biostimulated sewage sludge using mammalian cell culture assays.  |  Sommaggio, LRD., et al. 2018. Chemosphere. 199: 10-15. PMID: 29427809
  12. Unravelling the Potential Cytotoxic Effects of Metal Oxide Nanoparticles and Metal(Loid) Mixtures on A549 Human Cell Line.  |  Rosário, F., et al. 2020. Nanomaterials (Basel). 10: PMID: 32131449
  13. PBAT biodegradable mulch films: Study of ecotoxicological impacts using Allium cepa, Lactuca sativa and HepG2/C3A cell culture.  |  Souza, PMS., et al. 2020. Chemosphere. 256: 126985. PMID: 32445994
  14. New Broth Macrodilution Volatilization Method for Antibacterial Susceptibility Testing of Volatile Agents and Evaluation of Their Toxicity Using Modified MTT Assay In Vitro.  |  Houdkova, M., et al. 2021. Molecules. 26: PMID: 34299454
  15. An in vitro study on the efficacy of hydrogen peroxide mediated high-power photodynamic therapy affecting Enterococcus faecalis biofilm formation and dispersal.  |  Afrasiabi, S. and Chiniforush, N. 2023. Photodiagnosis Photodyn Ther. 41: 103310. PMID: 36720360

Ordering Information

Product NameCatalog #UNITPriceQtyFAVORITES

Thiazolyl Blue, 1 g

sc-359848
1 g
$115.00

Thiazolyl Blue, 5 g

sc-359848A
5 g
$275.00

Thiazolyl Blue, 25 g

sc-359848B
25 g
$991.00

Thiazolyl Blue, 100 g

sc-359848C
100 g
$3215.00