Wnt Inhibitor IWP-4 was identified in a high throughput screen for antagonists of the Wnt / β-catenin pathway. Wnt Inhibitor IWP-4 prevents palmitylation of Wnt proteins by Porcupine (Porcn), a membrane-bound O-acyltransferase, there by blocking Wnt secretion and activity. It also blocks phosphorylation of the Lrp6 receptor and accumulation of both Dvl2 and β-catenin1.
Product Name
Stemolecule Wnt Inhibitor IWP-4
Catalog Number
04-0036
Size
2 mg
Alternate Name(s)
2-(3,4,6,7-tetrahydro-3-(2-methoxyphenyl)-4-oxothieno[3,2-d]pyrimidin-2-ylthio)-N-(6-methylbenzo[d]thiazol-2-yl)acetamide
Chemical Formula
C23H20N4O3S3
Molecular Weight
496.62
CAS Number
686772-17-8
Purity
Greater than 96% by HPLC analysis
Formulation
White solid
Solubility
This molecule is reported to be soluble in DMSO at 1.2 mM.
Reconstitution
For a 1.2 mM concentrated stock solution of Wnt Inhibitor IWP-4, reconstitute the compound by adding 3.36 mL of DMSO to the entire contents of the vial. If precipitate is observed, warm the solution to 37 °C for 2 to 5 minutes. For use in cell culture, keep the total DMSO concentration less than 0.1%.
Storage and Stability
Store powder at 4 °C protected from light. Information about the stability of Stemolecules in solution is largely not available. As a general guideline, we recommend that stock solution be freshly made and stored in aliquots at − 20 °C, protected from light. The effect of storage of stock solutions should be verified for each application.
Quality Control
The purity of Wnt Inhibitor IWP-4 was determined by HPLC analysis. The accurate mass was determined by mass spectrometry. Cellular toxicity of Wnt Inhibitor IWP-4 was tested on mouse embryonic stem cells.
