Skip to Content
Merck
All Photos(1)

Key Documents

616461

Sigma-Aldrich

TGF-β RI Kinase Inhibitor VI, SB431542

TGF-β RI Kinase Inhibitor VI, SB431542, CAS 301836-41-9, is a cell-permeable inhibitor of SMAD2 phosphorylation. Inhibits the activity of ALK4 and ALK5 (IC₅₀ = 140 nM and 94 nM, respectively).

Synonym(s):

TGF-β RI Kinase Inhibitor VI, SB431542, 4-[4-(3,4-Methylenedioxyphenyl)-5-(2-pyridyl)-1H-imidazol-2-yl]benzamide, Dihydrate, 4-[4-(1,3-Benzodioxol-5-yl)-5-(2-pyridyl)-1H-imidazol-2-yl]benzamide, Dihydrate, SB-431542

Sign Into View Organizational & Contract Pricing
All Photos(1)

About This Item

CAS Number:
301836-41-9
UNSPSC Code:
51111800
NACRES:
NA.77

Quality Level

300

Assay

≥97% (HPLC)

form

solid

manufacturer/tradename

Calbiochem®

storage condition

OK to freeze
protect from light

color

off-white

solubility

ethanol: 10 mg/mL
DMSO: 100 mg/mL

shipped in

ambient

storage temp.

2-8°C

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)

InChI key

FHYUGAJXYORMHI-UHFFFAOYSA-N

General description

A cell-permeable triarylimidazole compound that is shown to effectively inhibit cellular Smad2 phosphorylation (>90% inhibition by 10 µM inhibitor) upon vector-mediated expression of constitutively active ALK4, ALK5, or ALK7 in NIH 3T3 cells, while exhibiting little effect against Smad1 phosphorylation by other members of type I receptors for TGF-β in NIH 3T3 cultures expressing active ALK1, 2, 3, or 6. When tested directly in cell-free kinase assays, SB431542 is demonstrated to potently inhibit the activity of ALK4 and ALK5 (IC50 = 140 nM and 94 nM, respectively) with no or much reduced potency toward a panel of 24 other kinases (IC50 ≥10 µM in the presence of 10 µM ATP), including ALK2 and ALK6. Reported to improve the efficiency of 4-TF-induced human iPSCs generation from fibroblast cultures by >200-fold when used together with PD0325901 (Cat. No. 444966) and Thiazovivin (Cat. No. 420220).

Packaging

Packaged under inert gas

Warning

Toxicity: Standard Handling (A)

Legal Information

CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Ranjay Jayadev et al.
Science advances, 8(20), eabn2265-eabn2265 (2022-05-19)
Basement membranes (BMs) are ubiquitous extracellular matrices whose composition remains elusive, limiting our understanding of BM regulation and function. By developing a bioinformatic and in vivo discovery pipeline, we define a network of 222 human proteins and their animal orthologs
Xiaomin Liu et al.
Stem cell research & therapy, 13(1), 198-198 (2022-05-14)
Mammalian lens regeneration holds great potential as a cataract therapy. However, the mechanism of mammalian lens regeneration is unclear, and the methods for optimization remain in question. We developed an in vitro lens regeneration model using mouse capsular bag culture
Zachary T Hilt et al.
Circulation research, 128(5), 655-669 (2021-01-30)
Circulating monocytes can have proinflammatory or proreparative phenotypes. The endogenous signaling molecules and pathways that regulate monocyte polarization in vivo are poorly understood. We have shown that platelet-derived β2M (β-2 microglobulin) and TGF-β (transforming growth factor β) have opposing effects
Divya S Varghese et al.
Stem cells international, 2017, 2451927-2451927 (2017-11-18)
Human embryonic stem cells (hESCs) are being used extensively in array of studies to understand different mechanisms such as early human embryogenesis, drug toxicity testing, disease modeling, and cell replacement therapy. The protocols for the directed differentiation of hESCs towards
Antonella Muscella et al.
Journal of neurochemistry, 153(4), 525-538 (2019-11-16)
Following peripheral nerve injury, remnant Schwann cells adopt a migratory phenotype and remodel the extracellular matrix allowing axonal regrowth. Although much evidence has demonstrated that TGF-β1 promotes glioma cell motility and induces the expression of extracellular matrix proteins, the effects
View All Related Papers

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service