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Merck
CN

SML2938

Vernakalant hydrochloride

≥98% (HPLC)

Synonym(s):

(3R)-1-((1R,2R)-2-(2-(3,4-Dimethoxyphenyl)ethoxy)cyclohexyl)pyrrolidin-3-ol hydrochloride, (3R)-1-[(1R,2R)-2-[2-(3,4-Dimethoxyphenyl)ethoxy]cyclohexyl]-3-pyrrolidinol hydrochloride, RSD 1235, RSD-1235, RSD1235

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About This Item

Empirical Formula (Hill Notation):
C20H31NO4 · HCl
CAS Number:
748810-28-8
Molecular Weight:
385.93
UNSPSC Code:
12352200
NACRES:
NA.77

Key Documents

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Product Name

Vernakalant hydrochloride, ≥98% (HPLC)

SMILES string

Cl.N3(C[C@@H](CC3)O)[C@H]1[C@@H](CCCC1)OCCc2cc(c(cc2)OC)OC

InChI

1S/C20H31NO4.ClH/c1-23-19-8-7-15(13-20(19)24-2)10-12-25-18-6-4-3-5-17(18)21-11-9-16(22)14-21;/h7-8,13,16-18,22H,3-6,9-12,14H2,1-2H3;1H/t16-,17-,18-;/m1./s1

InChI key

JMHYCBFEEFHTMK-IIUXMCBISA-N

assay

≥98% (HPLC)

form

powder

storage condition

desiccated

color

white to beige

solubility

DMSO: 2 mg/mL, clear

storage temp.

−20°C

Quality Level

100

Biochem/physiol Actions

Anti-arrhythmic that exerts anti-fibrillatory efficacy via potential- & rate-dependent Nav1.5 (SCN5A) as well as atrial-selective Kv1.5 (KCNA5) blockade in vivo.
Vernakalant is a multiple ion channel blocker that exerts in vivo anti-fibrillatory (anti-arrhythmic) efficacy (ED50 = 1.5 μmol/kg/min iv. against ischemia-induced arrhythmias in rats) via atrial-selective Kv1.5 blockage (hKv1.5/rKv4.2/rKv4.3 IC50 = 13/38/30 μM at 1Hz & -80 to 60 mV in 200 (Kv1.5) or 400 (Kv4) msec) as well as potential- and rate-dependent Nav1.5 blockade (inward Na current INa IC50 = 9 μM/20 Hz & -80 mV, 31 μM/1Hz & -60 mV, 107 μM/1Hz & -120 mV using HEK hNav1.5 cells).

Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

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Certificates of Analysis (COA)

Lot/Batch Number
0000507969
0000507969
0000434834
0000434834
0000422408

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Rong Chen et al.
Biochemistry, 57(18), 2704-2710 (2018-04-14)
Molecular dynamics simulations are employed to determine the inhibitory mechanisms of three drugs, 5-(4-phenoxybutoxy)psoralen (PAP-1), vernakalant, and flecainide, on the voltage-gated K+ channel Kv1.5, a target for the treatment of cardiac arrhythmia. At neutral pH, PAP-1 is neutral, whereas the
Gerrit Frommeyer et al.
Europace : European pacing, arrhythmias, and cardiac electrophysiology : journal of the working groups on cardiac pacing, arrhythmias, and cardiac cellular electrophysiology of the European Society of Cardiology, 19(5), 866-873 (2016-10-06)
The antiarrhythmic drug vernakalant exerts antiarrhythmic effects in atrial fibrillation. Recent experimental data suggest interactions with the late sodium current and antiarrhythmic effects in ventricular arrhythmias. We aimed at investigating whether treatment with vernakalant reduces polymorphic ventricular tachycardia (VT) in
Jonas Goldin Diness et al.
Circulation. Arrhythmia and electrophysiology, 10(10) (2017-10-12)
Evidence has emerged that small-conductance Ca2+-activated K+ (SK) channels constitute a new target for treatment of atrial fibrillation (AF). SK channels are predominantly expressed in the atria as compared with the ventricles. Various marketed antiarrhythmic drugs are limited by ventricular
Arne van Hunnik et al.
Europace : European pacing, arrhythmias, and cardiac electrophysiology : journal of the working groups on cardiac pacing, arrhythmias, and cardiac cellular electrophysiology of the European Society of Cardiology, 20(1), 140-148 (2017-04-28)
Besides the inhibition of the sodium inward current, vernakalant also inhibits the ultra rapid rectifier (IKur) and transient outward current (Ito). Inhibition of these currents increases contractility in canine atrial myocytes and goat atria. We investigated the effect of vernakalant
David Fedida et al.
Journal of cardiovascular electrophysiology, 16(11), 1227-1238 (2005-11-24)
RSD1235 is a novel drug recently shown to convert AF rapidly and safely in patients.(1) Its mechanism of action has been investigated in a rat model of ischemic arrhythmia, along with changes in action potential (AP) morphology in isolated rat
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