Cat.No.ABP000129 Chemical NameTW-37/TW37 MolFormulaC33H35NO6S MolWeight573.699 Purity >99%

Chemical Name : TW-37/TW37

CAS : 877877-35-5

Synonyms: N-[4-[(2-tert-Butylphenyl)sulfonyl]phenyl]-2,3,4-trihydroxy-5-[(2-isopropylphenyl)methyl]benzamide

Solubility:Soluble in DMSO

Storage:-20C 2 years


TW-37 binds to the BH3 binding groove in Bcl-2 protein competing with BH3 peptides derived from Bid, Bim, and Bad proteins. TW-37 binds to Bcl-2 with a K(i) value of 290 nM and also to Bcl-xL and Mcl-1 with high affinities.TW-37 potently inhibits cell growth in PC-3 prostate cancer cells with an IC50 value of 200 nM and effectively induces apoptosis in a dose-dependent manner. TW-37 has an IC50 of 1.1 µmol/L for primary human endothelial cells and averaged 0.3 µmol/L for head and neck cancer cells (OSCC3,UM-SCC-1, and UMSCC-74A). The combination of TW-37 and cisplatin showed enhanced cytotoxic effects for endothelial cells and HNSCC in vitro, compared with single drug treatment.


1. Zeitlin BD, Joo E, Dong Z, Warner K, Wang G, Nikolovska-Coleska Z, Wang S, Nör JE. Antiangiogenic effect of TW37, a small-molecule inhibitor of Bcl-2. Cancer Res. 2006 Sep 1;66(17):8698-706. 2. Mohammad RM, Goustin AS, Aboukameel A, Chen B, Banerjee S, Wang G, Nikolovska-Coleska Z, Wang S, Al-Katib A. Preclinical studies of TW-37, a new nonpeptidic small-molecule inhibitor of Bcl-2, in diffuse large cell lymphoma xenograft model reveal drug action on both Bcl-2 and Mcl-1. Clin Cancer Res. 2007 Apr 1;13(7):2226-35. 3. Wang Z, Song W, Aboukameel A, Mohammad M, Wang G, Banerjee S, Kong D, Wang S, Sarkar FH, Mohammad RM. TW-37, a small-molecule inhibitor of Bcl-2, inhibits cell growth and invasion in pancreatic cancer. Int J Cancer. 2008 Aug 15;123(4):958-66. 4. Wang Z, Azmi AS, Ahmad A, Banerjee S, Wang S, Sarkar FH, Mohammad RM. TW-37, a small-molecule inhibitor of Bcl-2, inhibits cell growth and induces apoptosis in pancreatic cancer: involvement of Notch-1 signaling pathway. Cancer Res. 2009 Apr 1;69(7):2757-65. Epub 2009 Mar 24. 5. Ashimori N, Zeitlin BD, Zhang Z, Warner K, Turkienicz IM, Spalding AC, Teknos TN, Wang S, Nör JE. TW-37, a small-molecule inhibitor of Bcl-2, mediates S-phase cell cycle arrest and suppresses head and neck tumor angiogenesis. Mol Cancer Ther. 2009 Apr;8(4):893-903.