Skip to Content
Merck
All Photos(1)

Key Documents

View All Documentation

S8822

Sigma-Aldrich

SB-525334

≥98% (HPLC), solid, ALK5 inhibitor

Synonym(s):

6-[2-tert-Butyl-5-(6-methyl-pyridin-2-yl)-1H-imidazol-4-yl]-quinoxaline

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

About This Item

Empirical Formula (Hill Notation):
C21H21N5
CAS Number:
356559-20-1
Molecular Weight:
343.42
MDL number:
MFCD11045307
UNSPSC Code:
12352200
PubChem Substance ID:
329824610
NACRES:
NA.77

product name

SB-525334, ≥98% (HPLC)

Assay

≥98% (HPLC)

form

solid

color

yellow

solubility

DMSO: ≥20 mg/mL

originator

GlaxoSmithKline

storage temp.

2-8°C

SMILES string

Cc1cccc(n1)-c2[nH]c(nc2-c3ccc4nccnc4c3)C(C)(C)C

InChI

1S/C21H21N5/c1-13-6-5-7-16(24-13)19-18(25-20(26-19)21(2,3)4)14-8-9-15-17(12-14)23-11-10-22-15/h5-12H,1-4H3,(H,25,26)

InChI key

DKPQHFZUICCZHF-UHFFFAOYSA-N

Application

SB-525334 was used to study TGFβ1-mediated human trophoblast differentiation.7

Biochem/physiol Actions

SB-525334 blocks the activation of Smad2/3 induced by TGFβ1 in renal proximal tubule cells.4 The sensitivity of TGFβ1 is decreased by SB-525334 that benefits the pulmonary arterial hypertension condition by reversing the pulmonary arterial pressure.5 SB-525334 is reduces the tumor incidence and size of mesenchymal tumors such as uterine leiomyoma.6
SB-525334 is a potent activin receptor-like kinase (ALK5)/ type I TGFβ-receptor kinase inhibitor with IC50 = 14.3 nM.

Features and Benefits

This compound was developed by GlaxoSmithKline. To browse the list of other pharma-developed compounds and Approved Drugs/Drug Candidates, click here.

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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

Matthew Thomas et al.
The American journal of pathology, 174(2), 380-389 (2009-01-01)
Mutations in the gene for the transforming growth factor (TGF)-beta superfamily receptor, bone morphogenetic protein receptor II, underlie heritable forms of pulmonary arterial hypertension (PAH). Aberrant signaling via TGF-beta receptor I/activin receptor-like kinase 5 may be important for both the
Neel I Nissen et al.
Cancers, 14(3) (2022-02-16)
The use of novel tools to understand tumour-fibrosis in pancreatic ductal adenocarcinoma (PDAC) and novel anti-fibrotic treatments are highly needed. We established a pseudo-3D in vitro model including humane pancreatic fibroblasts (PFs) and pancreatic cancer-associated fibroblasts (CAFs) in combination with
Eugene T Grygielko et al.
The Journal of pharmacology and experimental therapeutics, 313(3), 943-951 (2005-03-17)
SB-525334 (6-[2-tert-butyl-5-(6-methyl-pyridin-2-yl)-1H-imidazol-4-yl]-quinoxaline) has been characterized as a potent and selective inhibitor of the transforming growth factor-beta1 (TGF-beta1) receptor, activin receptor-like kinase (ALK5). The compound inhibited ALK5 kinase activity with an IC(50) of 14.3 nM and was approximately 4-fold less potent
Lindsay R Piraino et al.
Cells, 11(12) (2022-06-25)
The development of therapies to prevent or treat salivary gland dysfunction has been limited by a lack of functional in vitro models. Specifically, critical markers of salivary gland secretory phenotype downregulate rapidly ex vivo. Here, we utilize a salivary gland
Robert B Good et al.
BMC biomedical engineering, 1, 14-14 (2019-06-28)
Excessive extracellular matrix (ECM) deposition is a hallmark feature in fibrosis and tissue remodelling diseases. Typically, mesenchymal cells will produce collagens under standard 2D cell culture conditions, however these do not assemble into fibrils. Existing assays for measuring ECM production
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