For research use only.

Catalog No.S6616 Synonyms: ETC-1922159

ETC-159 Chemical Structure

CAS No. 1638250-96-0

ETC-159 (ETC-1922159) is an orally available, potent porcupine inhibitor with an IC50 of 2.9 nM for inhibiting β-catenin reporter activity in STF3A cells.

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Biological Activity

Description ETC-159 (ETC-1922159) is an orally available, potent porcupine inhibitor with an IC50 of 2.9 nM for inhibiting β-catenin reporter activity in STF3A cells.
Porcn [1]
In vitro

ETC-159 treatment causes decreased abundance of Wnt3a-stabilized β-catenin protein in both mouse L cells and HEK293 cells. ETC-159 inhibits β-catenin signaling in response to multiple active Wnts. ETC-159 inhibits mouse PORCN with an IC50 of 18.1 nM, whereas the IC50 for Xenopus Porcn is approximately fourfold higher (70 nM)[1].

In vivo

ETC-159 is orally bioavailable and effectively inhibits the growth of mouse mammary tumor virus-Wnt1 tumors. After a single oral dose of 5 mg/kg in mice, ETC-159 is rapidly absorbed into the blood with a Tmax of ~0.5 h and oral bioavailability of 100%. The plasma half-life is ~1.18 h and its concentration in the blood remained above the in vitro IC50 for at least 16 h. Treatment of mice with increasing doses of ETC-159 leads to a dose-related increase in exposure. ETC-159 also effectively inhibits Wnt autocrine signaling and growth of teratocarcinomas. ETC-159 effectively inhibits the growth and induces differentiation of colon cancers with RSPO translocations and induces global remodeling of gene expression. Suppression of Wnt/β-catenin signaling with ETC-159 in genetically defined tumors induces irreversible cellular differentiation thus preventing regrowth of these tumors[1].


Cell Research:


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  • Cell lines: Mouse L cells
  • Concentrations: 100 nM
  • Incubation Time: 0-24 h
  • Method:

    Mouse L cells stably expressing Wnt3a are trypsinizised and treated with DMSO or 100 nM ETC-159 before plating in cell culture dishes. The cells are harvested at indicated time points and total β-catenin levels are assessed by immunoblot.

    (Only for Reference)
Animal Research:


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  • Animal Models: BALB/c nude, NCr nude or NOD-scid-gamma mice
  • Dosages: 5, 30 or 100 mg/kg
  • Administration: by oral gavage
    (Only for Reference)

Solubility (25°C)

In vitro DMSO 78 mg/mL (199.29 mM)
Water Insoluble
Ethanol Insoluble

* Please note that Selleck tests the solubility of all compounds in-house, and the actual solubility may differ slightly from published values. This is normal and is due to slight batch-to-batch variations.

Chemical Information

Molecular Weight 391.38


CAS No. 1638250-96-0
Storage powder
in solvent
Synonyms ETC-1922159
Smiles CN1C2=C(C(=O)N(C1=O)C)N(C=N2)CC(=O)NC3=NN=C(C=C3)C4=CC=CC=C4

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Cell Lines Assay Type Concentration Incubation Time Formulation Activity Description PMID