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WST-8, reagent for cell proliferation assay

Artikel-Nr. Packungseinheit Preis Vorlaufzeit
4868-100mg 100 mg $105 Auf Lager
4868-500mg 500 mg $980 Auf Lager
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WST-8 (Water-Soluble Tetrazolium 8) is a water-soluble tetrazolium salt widely used to assess the metabolic activity of cells. The dye does not penetrate living cells but can be reduced outside the cells by NADPH-dependent cellular oxidoreductases to water-soluble formazan. The reaction occurs by electron transfer across the plasma membrane in a neutral pH and the presence of an intermediate electron acceptor, 1-methoxyphenazine methosulfate. The staining intensity is proportional to the number of viable cells. The maximum absorption of the reaction product is 450–500 nm.

The use of WST-8 has several advantages:

  • Unlike MTT, working with WST-8 does not require dissolving formazan crystals, simplifying the protocol, and eliminating the use of toxic solvents (e.g., DMSO).
  • Cell analysis using WST-8 is a one-step method. The reagent is added directly to the culture medium, and the results are read without additional processing.
  • WST-8 is non-toxic to cells, which allows for long incubations (up to 24 hours) without the risk of artifacts.
  • High sensitivity of the method. A wide dynamic range ensures accuracy even at low cell density.
  • The method is compatible with adherent and suspension cultures and various types of spectrophotometric measurement plates.

We also supply WST-8 as a ready-to-use kit for cell proliferation assay.

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CytoTracer Blue CMAC

Non-toxic, cell-permeant blue fluorescent dye for labeling and long-term tracing of living cells.

General properties

Appearance: brick solid
Molecular weight: 600.47
CAS number: 193149-74-5
Molecular formula: C20H14N6NaO11S2
IUPAC name: 2-(2-Methoxy-4-nitropenyl)-3-(4-nitropenyl)-5-(2,4-disulfophenyl)-2H-tetrazolium, sodium salt
Solubility: water, DMSO
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.
Sicherheitsdatenblatt: herunterladen
Product specifications
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