Date published: 2026-3-13

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A 83-01 (CAS 909910-43-6)

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Alternate Names:
A 83-01 is known as an ALK5, ALK4, and ALK7 inhibitor.
Application:
A 83-01 is an inhibitor of TGF-β type I receptor kinase (ALK5), activin type IB receptor (ALK4), and nodal type I receptor (ALK7).
CAS Number:
909910-43-6
Purity:
≥97%
Molecular Weight:
421.52
Molecular Formula:
C25H19N5S
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.
Available in US only.
* Refer to Certificate of Analysis for lot specific data.

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A 83-01 is a selective inhibitor of TGF-β type I receptor ALK5 kinase, type I activin/nodal receptor ALK4, and type I nodal receptor ALK7 (IC50 values are 12, 45, and 7.5 nM respectively). A 83-01 blocks phosphorylation of Smad2 and inhibits TGF-β-induced epithelial-to-mesenchymal transition. It only weakly inhibits ALK-1, -2, -3, -6 and MAPK activity. A 83-01 is more potent than SB 431542. Fibroblasts can be reprogrammed by A 83-01 into alternative lineages.


A 83-01 (CAS 909910-43-6) References

  1. The ALK-5 inhibitor A-83-01 inhibits Smad signaling and epithelial-to-mesenchymal transition by transforming growth factor-beta.  |  Tojo, M., et al. 2005. Cancer Sci. 96: 791-800. PMID: 16271073
  2. Attachment to laminin-111 facilitates transforming growth factor beta-induced expression of matrix metalloproteinase-3 in synovial fibroblasts.  |  Hoberg, M., et al. 2007. Ann Rheum Dis. 66: 446-51. PMID: 17124250
  3. Increase in tumour permeability following TGF-beta type I receptor-inhibitor treatment observed by dynamic contrast-enhanced MRI.  |  Minowa, T., et al. 2009. Br J Cancer. 101: 1884-90. PMID: 19888220
  4. Enhanced antitumor efficacy of folate-linked liposomal doxorubicin with TGF-β type I receptor inhibitor.  |  Taniguchi, Y., et al. 2010. Cancer Sci. 101: 2207-13. PMID: 20608940
  5. Topical application of ALK5 inhibitor A-83-01 reduces burn wound contraction in rats by suppressing myofibroblast population.  |  Sun, X., et al. 2014. Biosci Biotechnol Biochem. 78: 1805-12. PMID: 25351330
  6. Pharmacological inhibition of TGFβ receptor improves Nkx2.5 cardiomyoblast-mediated regeneration.  |  Chen, WP., et al. 2015. Cardiovasc Res. 105: 44-54. PMID: 25362681
  7. Optimized Approaches for Generation of Integration-free iPSCs from Human Urine-Derived Cells with Small Molecules and Autologous Feeder.  |  Li, D., et al. 2016. Stem Cell Reports. 6: 717-728. PMID: 27132887
  8. Small molecule-mediated reprogramming of human hepatocytes into bipotent progenitor cells.  |  Kim, Y., et al. 2019. J Hepatol. 70: 97-107. PMID: 30240598
  9. Tissue engineering approaches for treating pelvic organ prolapse using a novel source of stem/stromal cells and new materials.  |  Gargett, CE., et al. 2019. Curr Opin Urol. 29: 450-457. PMID: 31008783
  10. Regulatory expression of uncoupling protein 1 and its related genes by endogenous activity of the transforming growth factor-β family in bovine myogenic cells.  |  Abd Eldaim, MA., et al. 2021. Cell Biochem Funct. 39: 116-125. PMID: 33006416
  11. Chemical conversion of aged hepatocytes into bipotent liver progenitor cells.  |  Huang, Y., et al. 2021. Hepatol Res. 51: 323-335. PMID: 33378128
  12. A TGFβ Signaling Inhibitor, SB431542, Inhibits Reovirus-mediated Lysis of Human Hepatocellular Carcinoma Cells in a TGFβ-independent Manner.  |  Ishigami, I., et al. 2021. Anticancer Res. 41: 2431-2440. PMID: 33952468
  13. Successful induction of human chemically induced liver progenitors with small molecules from damaged liver.  |  Miyoshi, T., et al. 2022. J Gastroenterol. 57: 441-452. PMID: 35294680
  14. A Small-Molecule Cocktails-Based Strategy in Culture of Mesenchymal Stem Cells.  |  Feng, Y., et al. 2022. Front Bioeng Biotechnol. 10: 819148. PMID: 35360405

Ordering Information

Product NameCatalog #UNITPriceQtyFAVORITES

A 83-01, 10 mg

sc-203791
10 mg
$202.00
US: Only available in the US (Out of Stock: Availability September 26, 2025)

A 83-01, 50 mg

sc-203791A
50 mg
$811.00
US: Only available in the US