Home Others Dyes inhibitor WST-8 For research use only.

WST-8

WST-8 is a water-soluble tetrazolium salt used for assessing cell metabolic activity that produces corresponding formazan dye that absorbs at 460 nm. WST-8 is typically used as a cell viability indicator in cell proliferation assays.

WST-8 Chemical Structure

WST-8 Chemical Structure

CAS No. 193149-74-5

Purity & Quality Control

WST-8 Related Products

Biological Activity

Description WST-8 is a water-soluble tetrazolium salt used for assessing cell metabolic activity that produces corresponding formazan dye that absorbs at 460 nm. WST-8 is typically used as a cell viability indicator in cell proliferation assays.
In vitro
In vitro

WST-8 is reduced by NADH in good yields at neutral pHs in the presence of 1-methoxy PMS to produce the corresponding formazan dye that absorbs at 460 nm. The formazan is soluble to water at concentrations higher than 0.1 M. WST-8 is useful as a sensitive chromogenic indicator for NADH. It is also applicable to cell proliferation assays as a cell viability indicator.[1]
Cell Research Cell lines Hela cells
Concentrations 0.5 mM
Incubation Time 2 h
Method

A hundred μl of HeLa cell culture in the logarithmic phase is inoculated onto a 96-well microtiter plate, and the plate pre-incubated for 24 h in a CO2 incubator at 37℃. A 10 μl of the working solution containing WST-8 and lmethoxy PMS (0.5 mM and 20 μM, respectively, as the final concentration) is added to each well; it is incubated for an additional 2 h. The absorbance of each well is measured at 450 nm with a reference wavelength at 650 nm with an M-UVmax microplate reader.
NCT Number Recruitment Conditions Sponsor/Collaborators Start Date Phases
NCT02507167 Completed
Gastrointestinal Hormones
University Medicine Greifswald
 November 2012 Phase 1

Chemical Information & Solubility

Molecular Weight 600.47 Formula

C20H13N6NaO11S2
CAS No. 193149-74-5 SDF --
Smiles COC1=C(C=CC(=C1)[N+](=O)[O-])[N+]2=NC(=NN2C3=CC=C(C=C3)[N+](=O)[O-])C4=C(C=C(C=C4)S(=O)(=O)[O-])S(=O)(=O)[O-].[Na+]
Storage (From the date of receipt) 3 years -20°C(in the dark) powder

In vitro
Batch:

DMSO : 100 mg/mL ( (166.53 mM) Moisture-absorbing DMSO reduces solubility. Please use fresh DMSO.)

Water : 100 mg/mL

Ethanol : Insoluble


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In vivo
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Method for preparing DMSO master liquid: mg drug pre-dissolved in μL DMSO ( Master liquid concentration mg/mL, Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug. )

Method for preparing in vivo formulation: Take μL DMSO master liquid, next addμL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH2O, mix and clarify.

Method for preparing in vivo formulation: Take μL DMSO master liquid, next add μL Corn oil, mix and clarify.

Note: 1. Please make sure the liquid is clear before adding the next solvent.
2. Be sure to add the solvent(s) in order. You must ensure that the solution obtained, in the previous addition, is a clear solution before proceeding to add the next solvent. Physical methods such
as vortex, ultrasound or hot water bath can be used to aid dissolving.

Tech Support

Answers to questions you may have can be found in the inhibitor handling instructions. Topics include how to prepare stock solutions, how to store inhibitors, and issues that need special attention for cell-based assays and animal experiments.

Handling Instructions

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