Date published: 2026-4-23

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(S)-(−)-Blebbistatin (CAS 856925-71-8)

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Alternate Names:
1-Phenyl-1,2,3,4-tetrahydro-4-hydroxypyrrolo[2.3-b]-7-methylquinolin-4-one; (−)-Blebbistatin
Application:
(S)-(−)-Blebbistatin is an inhibitor of myosin II
CAS Number:
856925-71-8
Purity:
≥98%
Molecular Weight:
292.34
Molecular Formula:
C18H16N2O2
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.
* Refer to Certificate of Analysis for lot specific data.

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(S)-(−)-Blebbistatin is a selective inhibitor of myosin II (MYH2). It also inhibits contraction of the cleavage furrow without disrupting of mitosis or the contractile ring assembly. (S)-(−)-Blebbistatin exhibits rapid and reversible blocking of cell blebbing, as well as disruption of directed cell migration and of cytokinesis in vertebrate cells. (S)-(−)-Blebbistatin, discovered in 2004, is an inhibitor of myosin II, a vital motor protein involved in muscle contraction. Recognized for its ability to impede myosin II-mediated cell contractility in vitro, this small molecule has emerged as a valuable asset in investigating the intricate biochemistry and physiology of muscle contraction. Its application extends to in vitro studies, where it has been employed to delve into the mechanisms governing muscle contraction and its regulation in various cell culture systems.


(S)-(−)-Blebbistatin (CAS 856925-71-8) References

  1. Dissecting temporal and spatial control of cytokinesis with a myosin II Inhibitor.  |  Straight, AF., et al. 2003. Science. 299: 1743-7. PMID: 12637748
  2. Specificity of blebbistatin, an inhibitor of myosin II.  |  Limouze, J., et al. 2004. J Muscle Res Cell Motil. 25: 337-41. PMID: 15548862
  3. Myosin IIA is required for cytolytic granule exocytosis in human NK cells.  |  Andzelm, MM., et al. 2007. J Exp Med. 204: 2285-91. PMID: 17875677
  4. The small molecule tool (S)-(-)-blebbistatin: novel insights of relevance to myosin inhibitor design.  |  Lucas-Lopez, C., et al. 2008. Org Biomol Chem. 6: 2076-84. PMID: 18528569
  5. In vitro and in vivo relaxation of corpus cavernosum smooth muscle by the selective myosin II inhibitor, blebbistatin.  |  Zhang, XH., et al. 2009. J Sex Med. 6: 2661-71. PMID: 19686429
  6. Label-free detection of cell-contractile activity with lipid nanotubes.  |  Sugihara, K., et al. 2013. Integr Biol (Camb). 5: 423-30. PMID: 23212045
  7. The effect of kinase, actin, myosin and dynamin inhibitors on host cell egress by Toxoplasma gondii.  |  Caldas, LA., et al. 2013. Parasitol Int. 62: 475-82. PMID: 23624149
  8. Intracellular trafficking and endocytosis of CXCR4 in fetal mesenchymal stem/stromal cells.  |  Pelekanos, RA., et al. 2014. BMC Cell Biol. 15: 15. PMID: 24885150
  9. The effects of actomyosin disruptors on the mechanical integrity of the avian crystalline lens.  |  Won, GJ., et al. 2015. Mol Vis. 21: 98-109. PMID: 25684975
  10. Intracellular sodium elevation reprograms cardiac metabolism.  |  Aksentijević, D., et al. 2020. Nat Commun. 11: 4337. PMID: 32859897
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Ordering Information

Product NameCatalog #UNITPriceQtyFAVORITES

(S)-(−)-Blebbistatin, 1 mg

sc-204253
1 mg
$72.00

(S)-(−)-Blebbistatin, 5 mg

sc-204253A
5 mg
$265.00

(S)-(−)-Blebbistatin, 10 mg

sc-204253B
10 mg
$495.00

(S)-(−)-Blebbistatin, 25 mg

sc-204253C
25 mg
$968.00