5.04462

IWR-1

InSolution, ≥95%, 25 mM in DMSO, Wnt Antagonist I, endo

• Synonym(s): InSolution Wnt Antagonist I, IWR-1-endo, Inhibitor of Wnt Response-1, TNKS1/2 Inhibitor II, Tankyrase1/2 Inhibitor II, Wnt Pathway Inhibitor I
• Empirical Formula (Hill Notation): C₂₅H₁₉N₃O₃
• CAS Number: 1127442-82-3
• Molecular Weight: 409.44
• UNSPSC Code: 12352200
• NACRES: NA.77

Properties

• Quality Level: 100
• Assay: ≥95% (HPLC)
• form: liquid
• manufacturer/tradename: Calbiochem^®
• storage condition: OK to freeze; avoid repeated freeze/thaw cycles; desiccated (hygroscopic); protect from light
• storage temp.: −70°C
• InChI: 1S/C25H19N3O3/c29-23(27-19-5-1-3-14-4-2-12-26-22(14)19)15-8-10-18(11-9-15)28-24(30)20-16-6-7-17(13-16)21(20)25(28)31/h1-12,16-17,20-21H,13H2,(H,27,29)/t16-,17+,20-,21+
• InChI key: ZGSXEXBYLJIOGF-ALFLXDJESA-N

Description

General description

A cell-permeable p-imidobenzamidoquinoline, endo-diastereomer that is shown to inhibit the activity of TNKS1/PARP5a and TNKS2/PARP5b in in vitro auto-PARsylation assays (IC₅₀ = 131 and 56 nM, respectively) and effectively suppress Wnt-stimulated transcription activity in L-Wnt-STF-based reporter assays (IC₅₀ = 180 nM), while exhibiting little activity against PARP1 or PARP2 (IC₅₀ >18.75 µM). Although both IWR-1-endo and XAV939 (Tankyrase1/2 Inhibitor; >Cat. No. 575545) act as reversible Wnt pathway inhibitors and exhibit similar pharmacological effects both in vitro and in vivo, IWR-1-endo exerts its effect via interaction with Axin, while XAV939 binds TNKS directly.

Biochem/physiol Actions

Cell permeable: yes

Primary Target
Axin

Reversible: yes

Packaging

Packaged under inert gas

Warning

Toxicity: Irritant (B)

Physical form

A 25 mM (5 mg/489 µL) solution of Wnt Antagonist I, IWR-1-endo (Cat. No. 681669) in DMSO.

Reconstitution

Following initial thaw, aliquot and freeze (-70°C). Aliquots are stable for up to 6 months at -70°C.

Other Notes

Wang, H., et al. 2011. ACS Chem. Biol.6, 192.
Chen, B., et al. 2009. Nature Chem. Biol.5, 100.
Huang, S.M., et al. 2009. Nature461, 614.

Legal Information

CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany

Safety Information

• Storage Class Code: 10 - Combustible liquids
• WGK: WGK 2
• Flash Point(F): 188.6 °F - (refers to pure substance)
• Flash Point(C): 87 °C - (refers to pure substance)