CCK-8, cell proliferation assay
Cat. # | Quantity | Price | Lead time | Buy this product |
---|---|---|---|---|
11972
/ 100 tests
|
100 uL |
$12
|
21 days | |
31972
/ 500 tests
|
5 mL |
$138
|
21 days | |
41972
/ 1000 tests
|
10 mL |
$269
|
21 days |
Cell Counting Kit 8 (CCK-8) is a sensitive colorimetric assay used in biomedical research to determine cell viability, proliferation, and cytotoxicity. It works by employing the highly water-soluble tetrazolium salt, WST-8, which is reduced by intracellular dehydrogenases in live cells into a water-soluble, orange-colored formazan dye. The intensity of this color, measured by a microplate reader at a specific wavelength (around 450 nm), is directly proportional to the number of metabolically active cells.
The CCK-8 assay offers ease of use, minimal toxicity, and enhanced sensitivity compared to tests based on other tetrazolium salts such as MTT, XTT, MTS, or WST-1.
Excitation and emission spectra of WST-8

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General properties
Appearance: | red liquid |
Quality control: | NMR 1H and HPLC-MS (95+%), functional test |
Customs commodity code: | 12 months after receival at 0 to 5 °C in the dark. Transportation: at room temperature for up to 3 weeks. Desiccate. |
MSDS: | Download |
Product specifications |
Spectral properties
Excitation/absorption maximum, nm: | 458 |
Emission maximum, nm: | 538 |
