Available as a complete kit—designed for improved and reliable determination of cell viability. See product page »

XTT (2,3-Bis-(2-Methoxy-4-Nitro-5-Sulfophenyl)-2H-Tetrazolium-5-Carboxanilide)

Catalog number:  X6493

Related applications:

Cell Viability, Proliferation & Function

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XTT is used to assess cell viability as a function of redox potential. Actively respiring cells convert the water-soluble XTT to a water-soluble, orange colored formazan product. Unlike MTT, XTT does not require solubilization prior to quantitation, thereby reducing the assay time in many viability assay protocols. Moreover, the sensitivity of the XTT reduction assay is reported to be similar to or better than that of the MTT reduction assay.
For Research Use Only. Not for use in diagnostic procedures.


Compatible Cells: Eukaryotic Cells
Shipping Condition: Room Temperature
Detection Method: Colorimetric
For Use With (Equipment): Microplate Reader
Format: 96-well plate

Contents & storage

Store in freezer (-5 to -30°C).