WARNING: This product is for research use only, not for human or veterinary use.

MedKoo CAT#: 407135

CAS#: 1431866-33-9

Description: WEHI-539 is a highly potent and selective BCL-XL inhibitor. The prosurvival BCL-2 family protein BCL-X(L) is often overexpressed in solid tumors and renders malignant tumor cells resistant to anticancer therapeutics. WEHI-539 has high affinity (subnanomolar) and selectivity for BCL-X(L) and potently kills cells by selectively antagonizing its prosurvival activity. WEHI-539 will be an invaluable tool for distinguishing the roles of BCL-X(L) from those of its prosurvival relatives, both in normal cells and notably in malignant tumor cells, many of which may prove to rely upon BCL-X(L) for their sustained.

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WEHI-539 is not in stock, but may be available through custom synthesis. For cost-effective reason, minimum 1 gram order is requested. The product will be characterized by NMR, HPLC and MS analysis. Purity (HPLC) is usually >98%. CoA, QC data, MSDS will be provided when product is successfully made. The estimated lead time is 2-3 months. Please send email to sales@medkoo.com to inquire quote.

Chemical Structure


Theoretical Analysis

MedKoo Cat#: 407135
Name: WEHI-539
CAS#: 1431866-33-9
Chemical Formula: C31H29N5O3S2
Exact Mass: 583.17118
Molecular Weight: 583.72
Elemental Analysis: C, 63.79; H, 5.01; N, 12.00; O, 8.22; S, 10.98

Synonym: WEHI-539; WEHI 539; WEHI539

IUPAC/Chemical Name: (E)-5-(3-(4-(aminomethyl)phenoxy)propyl)-2-(8-(2-(benzo[d]thiazol-2-yl)hydrazono)-5,6,7,8-tetrahydronaphthalen-2-yl)thiazole-4-carboxylic acid


InChi Code: InChI=1S/C31H29N5O3S2/c32-18-19-10-14-22(15-11-19)39-16-4-9-27-28(30(37)38)34-29(40-27)21-13-12-20-5-3-7-24(23(20)17-21)35-36-31-33-25-6-1-2-8-26(25)41-31/h1-2,6,8,10-15,17H,3-5,7,9,16,18,32H2,(H,33,36)(H,37,38)/b35-24+


Technical Data

Solid powder

>98% (or refer to the Certificate of Analysis)

Shipping Condition:
Shipped under ambient temperature as non-hazardous chemical. This product is stable enough for a few weeks during ordinary shipping and time spent in Customs.

Storage Condition:
Dry, dark and at 0 - 4 C for short term (days to weeks) or -20 C for long term (months to years).

Soluble in DMSO, not in water

Shelf Life:
>2 years if stored properly

Drug Formulation:
This drug may be formulated in DMSO

Stock Solution Storage:
0 - 4 C for short term (days to weeks), or -20 C for long term (months).

Harmonized System Code:


1: Goodwin CM, Rossanese OW, Olejniczak ET, Fesik SW. Myeloid cell leukemia-1 is an important apoptotic survival factor in triple-negative breast cancer. Cell Death Differ. 2015 Jun 5. doi: 10.1038/cdd.2015.73. [Epub ahead of print] PubMed PMID: 26045046.

2: Tao ZF, Hasvold L, Wang L, Wang X, Petros AM, Park CH, Boghaert ER, Catron ND, Chen J, Colman PM, Czabotar PE, Deshayes K, Fairbrother WJ, Flygare JA, Hymowitz SG, Jin S, Judge RA, Koehler MF, Kovar PJ, Lessene G, Mitten MJ, Ndubaku CO, Nimmer P, Purkey HE, Oleksijew A, Phillips DC, Sleebs BE, Smith BJ, Smith ML, Tahir SK, Watson KG, Xiao Y, Xue J, Zhang H, Zobel K, Rosenberg SH, Tse C, Leverson JD, Elmore SW, Souers AJ. Discovery of a Potent and Selective BCL-XL Inhibitor with in Vivo Activity. ACS Med Chem Lett. 2014 Aug 26;5(10):1088-93. doi: 10.1021/ml5001867. eCollection 2014 Oct 9. PubMed PMID: 25313317; PubMed Central PMCID: PMC4190639.

3: Colak S, Zimberlin CD, Fessler E, Hogdal L, Prasetyanti PR, Grandela CM, Letai A, Medema JP. Decreased mitochondrial priming determines chemoresistance of colon cancer stem cells. Cell Death Differ. 2014 Jul;21(7):1170-7. doi: 10.1038/cdd.2014.37. Epub 2014 Mar 28. PubMed PMID: 24682005; PubMed Central PMCID: PMC4207483.

4: Lessene G, Czabotar PE, Sleebs BE, Zobel K, Lowes KN, Adams JM, Baell JB, Colman PM, Deshayes K, Fairbrother WJ, Flygare JA, Gibbons P, Kersten WJ, Kulasegaram S, Moss RM, Parisot JP, Smith BJ, Street IP, Yang H, Huang DC, Watson KG. Structure-guided design of a selective BCL-X(L) inhibitor. Nat Chem Biol. 2013 Jun;9(6):390-7. doi: 10.1038/nchembio.1246. Epub 2013 Apr 21. PubMed PMID: 23603658.