SB 431542: A selective inhibitor of the transforming growth factor-beta (TGF-beta) type I receptor activin receptor-like kinase ALK5 (IC50 = 94 nM), and the related ALK4 and ALK7. 4-(5-BENZOL[1,3]DIOXOL-5-YL-4-PYRLDIN-2-YL-1H-IMIDAZOL-2-YL)-BENZAMIDE
Ref: Laping et al. Inhibition of transforming growth factor (TGF)-beta1-induced extracellular matrix with a novel inhibitor of the TGF-beta type I receptor kinase activity: SB-431542. Mol.Pharmacol. 62 58, 2002. Inman et al. SB-431542 is a potent and specific inhibitor of transforming growth factor-beta superfamily type I activin receptor-like kinase (ALK) receptors ALK4, ALK5, and ALK7. Mol.Pharmacol. 62 65, 2002
Purity: Greater than 98% as determined by LC/MS analysis. LC/MS and/or NMR data available upon request.