CAS No. 1638250-96-0

Batch: Purity:99.88
ETC-159 Chemical Structure
Chemical Structure
Check the ETC-159 product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

Chemical Information

IUPAC Name 2-(1,3-dimethyl-2,6-dioxopurin-7-yl)-N-(6-phenylpyridazin-3-yl)acetamide
CAS Number 1638250-96-0
Molecular Formula

C19H17N7O3

Molecular Weight (MW) 391.38
SMILES CN1C2=C(C(=O)N(C1=O)C)N(C=N2)CC(=O)NC3=NN=C(C=C3)C4=CC=CC=C4
InChIKey QTRXIFVSTWXRJJ-UHFFFAOYSA-N

Ordering Information

Biological Activity

ETC-159 is an orally available, potent porcupine (PORCN) inhibitor that inhibits β-catenin reporter activity with an IC50 of 2.9 nM in STF3A cells. By targeting PORCN, it prevents Wnt ligand palmitoylation and secretion, thereby suppressing downstream Wnt/β-catenin signaling. This blockade reduces Wnt-driven gene expression and impairs cell proliferation in Wnt-dependent tumor models.

How to Prepare Stock Solution?

Concentration Volume Mass
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Solubility

Batch:
All in vitro solubility values are batch-tested experimental data (non-literature values).
Solvent Solubility & Note
DMSO 78 mg/mL (199.29 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO. The recommended stock concentration is 10 mM in DMSO.)
Water Insoluble
Ethanol Insoluble
FAQ
Q: Why does a DMSO stock precipitate in media/saline?
A: It is caused by unheated aqueous media (supersaturation), local solvent shock, or incorrect mixing sequence.
How to fix it?
  • Preheat media/saline to 37°C.
  • Mix rapidly (pipette/vortex) upon addition.
  • For complex mixes, always add the aqueous phase last.
  • Re-dissolve minor precipitates with a 37°C water bath and sonication (≤30 min).

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Note: Technical data last updated: Sep 1, 2026.