1. Stem Cell/Wnt
  2. Organoid Wnt
  3. IWR-1

IWR-1  (Synonyms: endo-IWR 1; IWR-1-endo)

Cat. No.: HY-12238 Purity: 99.49%
COA Handling Instructions

IWR-1 is a tankyrase inhibitor which inhibits Wnt/β-catenin signaling pathway.

For research use only. We do not sell to patients.

IWR-1 Chemical Structure

IWR-1 Chemical Structure

CAS No. : 1127442-82-3

Size Price Stock Quantity
Free Sample (0.1 - 0.5 mg)   Apply Now  
Solid + Solvent
10 mM * 1 mL in DMSO
ready for reconstitution
USD 73 In-stock
10 mM * 1 mL in DMSO USD 73 In-stock
5 mg USD 66 In-stock
10 mg USD 101 In-stock
50 mg USD 455 In-stock
100 mg USD 690 In-stock
200 mg   Get quote  
500 mg   Get quote  

* Please select Quantity before adding items.

This product is a controlled substance and not for sale in your territory.

Customer Review

Based on 32 publication(s) in Google Scholar

Top Publications Citing Use of Products

    IWR-1 purchased from MedChemExpress. Usage Cited in: Oncol Rep. 2018 Aug;40(2):877-886.  [Abstract]

    IWR-1 induces cell differentiation. (A) NB4 and (B) HL-60 cells are treated with 0 (DMSO), 5 and 10 μM IWR-1 for three days, and the expression of β-catenin and differentiation marker CD11b is assessed by western blotting.

    IWR-1 purchased from MedChemExpress. Usage Cited in: Cell Biol Int. 2017 May;41(5):534-543.  [Abstract]

    SCAPs are cultured with modified neural differentiation medium for the indicated time periods. The neuron-like cells in control group, SFRP2 over-expressed group and 10 uM IWR1-endo treated group are positive for βIII-tubulin (red) expression by using immunofluorescence staining.
    • Biological Activity

    • Purity & Documentation

    • References

    • Customer Review


    IWR-1 is a tankyrase inhibitor which inhibits Wnt/β-catenin signaling pathway.

    IC50 & Target

    IC50: 180 nM (Wnt)

    In Vitro

    Both IWR-1 and XAV939 act as reversible Wnt pathway inhibitors and exhibit similar pharmacological effects in vitro. IWR-1 exerts its effect via interaction with Axin, while XAV939 binds TNKS directly[1]. IWR-1 (10 μM) induces stabilization of β-catenin disruption complex. IWR-1 (10 μM) is added to the medium together with MIF, the size of cell colonies is extremely decreased, and that indicates the promoting effect of MIF on NSPC proliferation is inhibited by IWR-1 in any MIF concentration group. 2, 5 and 10 μM of IWR-1 significantly inhibits the proliferation of NSPC dose-dependently. IWR-1 inhibites the promoting effect of MIF on NSPC differentiation to neuron lineage[2]. IWR-1 treatment in the presence of maximal stimulatory dose of FSH (0.5 ng/mL) results in a dose dependent inhibition of the stimulatory effect of FSH with > 75% inhibition observed at the maximal inhibitory dose of IWR-1 (1 µM). IWR-1 treatment partially reverses the FSH-induced inhibition of granulosa cell CARTPT mRNA expression[3].

    MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

    Molecular Weight




    CAS No.



    Light yellow to brown




    Room temperature in continental US; may vary elsewhere.

    Powder -20°C 3 years
    4°C 2 years
    In solvent -80°C 2 years
    -20°C 1 year
    Solvent & Solubility
    In Vitro: 

    DMSO : 50 mg/mL (122.12 mM; Need ultrasonic)

    Stock Solutions
    Concentration Solvent Mass 1 mg 5 mg 10 mg
    1 mM 2.4424 mL 12.2118 mL 24.4236 mL
    5 mM 0.4885 mL 2.4424 mL 4.8847 mL
    10 mM 0.2442 mL 1.2212 mL 2.4424 mL
    *Please refer to the solubility information to select the appropriate solvent.
    In Vivo:
    • 1.

      Add each solvent one by one:  10% DMSO    40% PEG300    5% Tween-80    45% Saline

      Solubility: ≥ 2.5 mg/mL (6.11 mM); Clear solution

    • 2.

      Add each solvent one by one:  10% DMSO    90% (20% SBE-β-CD in Saline)

      Solubility: ≥ 2.5 mg/mL (6.11 mM); Clear solution

    • 3.

      Add each solvent one by one:  10% DMSO    90% Corn Oil

      Solubility: ≥ 2.5 mg/mL (6.11 mM); Clear solution

    *All of the co-solvents are available by MedChemExpress (MCE).
    Purity & Documentation

    Purity: 99.49%

    • No file chosen (Maximum size is: 1024 Kb)
    • If you have published this work, please enter the PubMed ID.
    • Your name will appear on the site.

    IWR-1 Related Classifications

    Help & FAQs
    • Do most proteins show cross-species activity?

      Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

    • Molarity Calculator

    • Dilution Calculator

    The molarity calculator equation

    Mass (g) = Concentration (mol/L) × Volume (L) × Molecular Weight (g/mol)

    Mass   Concentration   Volume   Molecular Weight *
    = × ×

    The dilution calculator equation

    Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

    This equation is commonly abbreviated as: C1V1 = C2V2

    Concentration (start) × Volume (start) = Concentration (final) × Volume (final)
    × = ×
    C1   V1   C2   V2

    Your Recently Viewed Products:

    Inquiry Online

    Your information is safe with us. * Required Fields.

    Product Name



    Applicant Name *


    Email Address *

    Phone Number *


    Organization Name *

    Department *


    Requested quantity *

    Country or Region *



    Bulk Inquiry

    Inquiry Information

    Product Name:
    Cat. No.:
    MCE Japan Authorized Agent: