WST-8 is a water-soluble tetrazolium salt used for assessing cell metabolic activity. At neutral pH and in the presence of the intermediate electron acceptor.
CAS Number: 193149-74-5
Molecular Weight: 600.47
Related CAS Number:
755734-51-1 (free acid)
Chemical Name: 4-(3-(2-methoxy-4-nitrophenyl)-2-(4-nitrophenyl)-2H-tetrazol-3-ium-5-yl)-3-sulfobenzenesulfonate, sodium salt
Appearance: Solid Power
Purity: ≥98% (or refer to the Certificate of Analysis)
Solubility: H2O : 50 mg/mL (83.13 mM; Need ultrasonic) DMSO : 10 mg/mL (16.63 mM; Need ultrasonic)
Shipping Condition: Shipped under ambient temperature as non-hazardous chemical or refer to Certificate of Analysis
Storage Condition: Dry, dark and -20 oC for 1 year or refer to the Certificate of Analysis.
Shelf Life: ≥360 days if stored properly.
Stock Solution Storage: 0 - 4 oC for 1 month or refer to the Certificate of Analysis.
Drug Formulation: To be determined
HS Tariff Code: 382200
How to use
The generally used MTS-based assay is compared with a bioassay employing a water-soluble tetrazolium dye, WST-8, using NFS-60 cells at a concentration of 7×105 cells/mL against 800 IU/mL of PEGylated G-CSF at 24, 48, 72, and 72 h time points to determine the efficacy of PEGylated G-CSF. Further, the optimized WST-8 dye-based assay is used to test the potency of various commercially available PEGylated G-CSF preparations. The results demonstrate enhanced sensitivity of the WST-8-based assay over the conventional MTS-based assay for determining the potency of PEGylated G-CSF using the NFS-60 cell line.
- Tiwari K, et al. A sensitive WST-8-based bioassay for PEGylated granulocyte colony stimulating factor using the NFS-60 cell line. Pharm Biol. 2015 Jun;53(6):849-54.
- shiyama M, et al. Talanta. 1997 Jul;44(7):1299-305.
Products are for research use only. Not for human use.
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