(-)-Blebbistatin

(-)-Blebbistatin is a selective inhibitor of the ATPase activity of non-muscle myosin II.

Product information

CAS Number: 856925-71-8

Molecular Weight: 292.33

Formula: C18H16N2O2

Chemical Name: (3aS)-3a-hydroxy-6-methyl-1-phenyl-1H,2H,3H,3aH,4H-pyrrolo[2,3-b]quinolin-4-one

Smiles: CC1C=C2C(=O)[C@]3(O)CCN(C3=NC2=CC=1)C1C=CC=CC=1

InChiKey: LZAXPYOBKSJSEX-GOSISDBHSA-N

InChi: InChI=1S/C18H16N2O2/c1-12-7-8-15-14(11-12)16(21)18(22)9-10-20(17(18)19-15)13-5-3-2-4-6-13/h2-8,11,22H,9-10H2,1H3/t18-/m1/s1

Technical Data

Appearance: Solid Power

Purity: ≥98% (or refer to the Certificate of Analysis)

Solubility: DMSO : 10 mg/mL (34.21 mM; Need ultrasonic). H2O : < 0.1 mg/mL (insoluble).

Shipping Condition: Shipped under ambient temperature as non-hazardous chemical or refer to Certificate of Analysis

Storage Condition: Dry, dark and -20 ^oC for 1 year or refer to the Certificate of Analysis.

Shelf Life: ≥12 months if stored properly.

Stock Solution Storage: 0 - 4 ^oC for 1 month or refer to the Certificate of Analysis.

Drug Formulation: To be determined

HS Tariff Code: 382200

How to use

In Vitro:

Blebbistatin potently inhibits several striated muscle myosins as well as vertebrate nonmuscle myosin IIA and IIB with IC50 values ranging from 0.5 to 5 μM. Smooth muscle myosin is only poorly inhibited (IC50=80 μM). Blebbistatin does not compete with nucleotide binding to the skeletal muscle myosin subfragment-1. The inhibitor preferentially binds to the ATPase intermediate with ADP and phosphate bound at the active site, and it slows down phosphate release. It blocks the myosin heads in a products complex with low actin affinity. In culture-activated hepatic stellate cells, blebbistatin is found to change both cell morphology and function. Stellate cells become smaller, acquire a dendritic morphology and have less myosin IIA-containing stress fibres and vinculin-containing focal adhesions. Blebbistatin impairs silicone wrinkle formation, reduces collagen gel contraction and blocks endothelin-1-induced intracellular Ca2+ release. It promotes wound-induced cell migration.

In Vivo:

Blebbistatin dose-dependently and completely relax both KCl- and carbachol-induced rat detrusor and endothelin-1-induced human bladder contraction. Pre-incubation with 10 μM blebbistatin attenuates carbachol responsiveness by 65% while blocking electrical field stimulation-induced bladder contraction reaching 50% inhibition at 32 Hz.

Products are for research use only. Not for human use.