Catalog No. size PriceQuantity
M6890-2 2mg solid $118
M6890-10 10mg solid $494



Product Information

SB-431542 is a novel small molecule inhibitor of the type I TGF-beta receptor, on a panel of human malignant glioma cell lines. SB-431542 blocked the phosphorylation and nuclear translocation of the SMADs, intracellular mediators of TGF-beta signaling, with decreased TGF-beta-mediated transcription. Furthermore, SB-431542 inhibited the expression of two critical effectors of TGF-beta-vascular endothelial growth factor and plasminogen activator inhibitor-1.


Chemical Formula: C22H16N4O3


Exact Mass: 384.12224


Molecular Weight: 384.39


Elemental Analysis: C, 68.74; H, 4.20; N, 14.58; O, 12.49


Chemical Name: 4-(4-(benzo[d][1,3]dioxol-5-yl)-5-(pyridin-2-yl)-1H-imidazol-2-yl)benzamide


InChi Key: 



InChi Code: InChI=1S/C22H16N4O3/c23-21(27)13-4-6-14(7-5-13)22-25-19(20(26-22)16-3-1-2-10-24-16)15-8-9-17-18(11-15)29-12-28-17/h1-11H,12H2,(H2,23,27)(H,25,26)


Smiles Code:




Technical Data:


Appearance: white to off-white solid powder

Purity: >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).

Solubility: 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).

HS Tariff Code: 2934.99.9001


In Vitro:

SB-431542 (1 μM) significantly reduces the TGF-β-induced nuclear accumulation of Smad proteins in A498 cells. SB-431542 inhibits TGF-β1-induced collagen Iα1 and PAI-1 mRNA with IC50 values of 60 and 50 nM, respectively. In addition, SB-431542 inhibits TGF-β1-induced fibronectin mRNA and protein with IC50 values of 62 and 22 nM, respectively. SB-431542 (10 μM) is a selective inhibitor of TGF-β signaling but has no effect on BMP signaling in NIH 3T3 cells. TRKI, SB-431542, inhibits TGF-beta-induced transcription, gene expression, apoptosis, and growth suppression. SB-431542 attenuates the tumor-promoting effects of TGF-beta, including TGF-beta-induced EMT, cell motility, migration and invasion, and vascular endothelial growth factor secretion in human cancer cell lines. SB-431542 induces anchorage independent growth of cells that are growth-inhibited by TGF-beta, whereas it reduces colony formation by cells that are growth-promoted by TGF-beta. SB-431542 (0.3 μM) inhibits cell proliferation induced by TGF-β in MG63 cells.


In Vivo

SB-431542 (10 mg/kg, i.p.) decreases lung metastasis but does not significantly alter growth of the primary tumor 4T1 xenograft.





  1. Tanaka H, Shinto O, Yashiro M, Yamazoe S, Iwauchi T, Muguruma K, Kubo N, Ohira M, Hirakawa K. Transforming growth factor β signaling inhibitor, SB-431542, induces maturation of dendritic cells and enhances anti-tumor activity. Oncol Rep. 2010 Dec;24(6):1637-43. PubMed PMID: 21042762.


  1. Mahmood A, Harkness L, Schrøder HD, Abdallah BM, Kassem M. Enhanced differentiation of human embryonic stem cells to mesenchymal progenitors by inhibition of TGF-beta/activin/nodal signaling using SB-431542. J Bone Miner Res. 2010 Jun;25(6):1216-33. PubMed PMID: 20200949.


  1. Xiao YQ, Liu K, Shen JF, Xu GT, Ye W. SB-431542 inhibition of scar formation after filtration surgery and its potential mechanism. Invest Ophthalmol Vis Sci. 2009 Apr;50(4):1698-706. Epub 2008 Dec 20. PubMed PMID: 19098325.


  1. Waghabi MC, Keramidas M, Calvet CM, Meuser M, de Nazaré C Soeiro M, MendonÃa-Lima L, Araújo-Jorge TC, Feige JJ, Bailly S. SB-431542, a transforming growth factor beta inhibitor, impairs Trypanosoma cruzi infection in cardiomyocytes and parasite cycle completion. Antimicrob Agents Chemother. 2007 Aug;51(8):2905-10. Epub 2007 May 25. PubMed PMID: 17526757; PubMed Central PMCID: PMC1932517.


  1. Hasegawa T, Nakao A, Sumiyoshi K, Tsuchihashi H, Ogawa H. SB-431542 inhibits TGF-beta-induced contraction of collagen gel by normal and keloid fibroblasts. J Dermatol Sci. 2005 Jul;39(1):33-8. PubMed PMID: 15978417.


Products are for research use only. Not for human use.



Payment & Security

American Express Apple Pay Diners Club Discover Elo Google Pay JCB Mastercard PayPal Shop Pay Venmo Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Estimate shipping

You may also like

Recently viewed