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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HCID 5663Generated: October 23, 2026

Vesnarinone

OPC 8212 · Arkin · CS-2139 · 0PC-8212 · VESNARINONE · Piteranometozine · Vesnarinone(OPC8212) · VESNARINONE USP/EP/BP

https://huagongshe.com/en/chemical/5663

Vesnarinone molecular structure

Identifiers & Physical Properties

CAS No.81840-15-5
Molecular formulaC22H25N3O4
Average molar mass395.5 g/mol
Monoisotopic mass395.18450629 g/mol
SMILESCOc1ccc(C(=O)N2CCN(c3ccc4c(c3)CCC(=O)N4)CC2)cc1OC
InChIKeyZVNYJIZDIRKMBF-UHFFFAOYSA-N
PubChem CID5663
ChEMBLCHEMBL17423
ChEBICHEBI:31237
DTXSIDDTXSID80231411

Chemical & Physical Properties

XLogP2.1
Topological polar surface area71.1
Hydrogen bond donors1
Hydrogen bond acceptors5
Rotatable bonds4
Heavy atoms29
Formal charge0
Complexity593
Melting point238.1-239.5° (Tominaga)mp 238.1-239.8° (Shimizu)
Boiling point519.41°C (rough estimate)
Density1.2414 (rough estimate)
Refractive index1.6500 (estimate)
Storage conditionsStore at -20°C
SolubilityDMSO:9.84(Max Conc. mg/mL)24.88(Max Conc. mM)DMSO:PBS (pH 7.2) (1:1):0.5(Max Conc. mg/mL)1.26(Max Conc. mM)DMF:3.0(Max Conc. mg/mL)7.59(Max Conc. mM)
Physical stateA crystalline solid
pKa (acidity coefficient)2.86(at 25℃)
ColorWhite to off-white
FDA UNII5COW40EV8M
GHS pictogramGHS07
Signal wordWarning
GHS hazard statementsH302-H315-H319-H335
GHS precautionary statementsP261-P305+P351+P338

Safety & Regulations

Signal wordWarning
GHS pictogramGHS07
GHS hazard statementsH302-H315-H319-H335
GHS precautionary statementsP261-P305+P351+P338

Applications & Uses

Description

Vesnarinone is a new orally-active positive inotropic agent introduced for the treatment of congestive heart failure. It exerts a positive inotropic effect on the heart and has a peripheral vasodilatory effect. Vesnarinone is claimed not to affect heart rate or aggravate arrhythmia.

Description

Vesnarinone is an inhibitor of phosphodiesterase 3 (PDE3; IC50s = 10.7 and 13.2 μM for PDE3A and PDE3B, respectively). It also inhibits ether-a-go-go-related gene 1 (ERG1) channels (IC50 = 1.1 μM in HEK293T cells expressing human ERG1). Vesnarinone (3-300 μM) increases contractile tension in isolated ventricular muscles of dog, cat, rabbit, and guinea pig in a dose-dependent manner. Oral and i.v. administration of vesnarinone increases right ventricular pressure with no effect on heart rate in dog models of tricuspid insufficiency- and pulmonary stenosis-induced congestive heart failure. It also increases contractility and coronary flow while decreasing heart rate in a guinea pig model of aortic stenosis-induced congestive heart failure. Formulations containing vesnarinone have been used for the treatment of congestive heart failure.

Uses

Cardiotonic.