≥98% (HPLC)

Empirical Formula (Hill Notation):
CAS Number:
Molecular Weight:

Quality Level


≥98% (HPLC)




white to beige


DMSO: 15 mg/mL, clear

storage temp.



JW55 has been used as a tankyrase-specific inhibitor to study its effects on the transcriptional activity of SRY-related HMG-box gene 9 (Sox9) in chondrocytes.


5, 25 mg in glass bottle

Biochem/physiol Actions

JW55 is a potent and selective inhibitor of Wnt/β-catenin signaling, that functions via inhibition of the PARP domain of tankyrase 1 and tankyrase 2 (TNKS1/2) leading to stabilization of AXIN2 followed by increased degradation of β-catenin. JW55 specifically inhibits canonical Wnt signaling that results in reduced cell-cycle progression, proliferation, and colony formation in colon carcinoma cell lines.
JW55 can decrease the formation of mouse colon adenoma in vivo. It possesses a methoxyphenyl moiety spreading towards the G-loop.

Features and Benefits

This compound is also offered as part of Sigma′s Library of Pharmacologically Active Compounds (LOPAC®1280), a biologically annotated collection of high-quality, ready-to-screen compounds. Click here to learn more.

Other Notes

JW55 has been expertly reviewed and recommended by the Chemical Probes Portal. For more information, please visit the JW55 probe summary on the Chemical Probes Portal website.

Legal Information

LOPAC is a registered trademark of Sigma-Aldrich Co. LLC


NONH for all modes of transport

WGK Germany


Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis

Certificate of Origin

Teemu Haikarainen et al.
Bioorganic & medicinal chemistry letters, 26(2), 328-333 (2015-12-27)
Tankyrases 1 and 2, the specialized members of the ARTD protein family, are druggable biotargets whose inhibition may have therapeutic potential against cancer, metabolic disease, fibrotic disease, fibrotic wound healing and HSV viral infections. We have previously identified a novel...
Sukyeong Kim et al.
Nature communications, 10(1), 4898-4898 (2019-10-28)
Osteoarthritis (OA) is a prevalent degenerative disease, which involves progressive and irreversible destruction of cartilage matrix. Despite efforts to reconstruct cartilage matrix in osteoarthritic joints, it has been a difficult task as adult cartilage exhibits marginal repair capacity. Here we...
Daniel Zingg et al.
Cancer cell, 34(1), 69-84 (2018-07-17)
Human melanomas frequently harbor amplifications of EZH2. However, the contribution of EZH2 to melanoma formation has remained elusive. Taking advantage of murine melanoma models, we show that EZH2 drives tumorigenesis from benign BrafV600E- or NrasQ61K-expressing melanocytes by silencing of genes...

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