WARNING: This product is for research use only, not for human or veterinary use.

MedKoo CAT#: 563610

CAS#: 332378-43-5

Description: S9947 is a Kv1.5/IKur channel blocker, suppressing both cloned (Kv1.5) and native (IKur) cardiac potassium current.

Chemical Structure

CAS# 332378-43-5

Theoretical Analysis

MedKoo Cat#: 563610
Name: S9947
CAS#: 332378-43-5
Chemical Formula: C29H27N3O3
Exact Mass: 465.2052
Molecular Weight: 465.55
Elemental Analysis: C, 74.82; H, 5.85; N, 9.03; O, 10.31

Price and Availability

This product is not in stock, which may be available by custom synthesis. For cost-effective reason, minimum order is 1g (price is usually high, lead time is 2~3 months, depending on the technical challenge). Quote less than 1g will not be provided. To request quote, please email to sales @medkoo.com or click below button.
Note: Price will be listed if it is available in the future.

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Synonym: S9947; S-9947; S 9947;

IUPAC/Chemical Name: Benzyl N-[[2-[2-(2-pyridin-2-ylethylcarbamoyl)phenyl]phenyl]methyl]carbamate


InChi Code: InChI=1S/C29H27N3O3/c33-28(31-19-17-24-13-8-9-18-30-24)27-16-7-6-15-26(27)25-14-5-4-12-23(25)20-32-29(34)35-21-22-10-2-1-3-11-22/h1-16,18H,17,19-21H2,(H,31,33)(H,32,34)


Appearance: Solid powder

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

Shipping Condition: Shipped under ambient temperature as non-hazardous chemical. This product is stable enough for a few weeks during ordinary shipping and time spent in Customs.

Storage Condition: Dry, dark and at 0 - 4 C for short term (days to weeks) or -20 C for long term (months to years).

Solubility: Soluble in DMSO

Shelf Life: >3 years if stored properly

Drug Formulation: This drug may be formulated in DMSO

Stock Solution Storage: 0 - 4 C for short term (days to weeks), or -20 C for long term (months).

HS Tariff Code: 2934.99.03.00

Preparing Stock Solutions

The following data is based on the product molecular weight 465.55 Batch specific molecular weights may vary from batch to batch due to the degree of hydration, which will affect the solvent volumes required to prepare stock solutions.

Recalculate based on batch purity %
Concentration / Solvent Volume / Mass 1 mg 5 mg 10 mg
1 mM 1.15 mL 5.76 mL 11.51 mL
5 mM 0.23 mL 1.15 mL 2.3 mL
10 mM 0.12 mL 0.58 mL 1.15 mL
50 mM 0.02 mL 0.12 mL 0.23 mL

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1: Kiper AK, Rinné S, Rolfes C, Ramírez D, Seebohm G, Netter MF, González W, Decher N. Kv1.5 blockers preferentially inhibit TASK-1 channels: TASK-1 as a target against atrial fibrillation and obstructive sleep apnea? Pflugers Arch. 2015 May;467(5):1081-90. doi: 10.1007/s00424-014-1665-1. Epub 2014 Dec 17. PubMed PMID: 25511502.

2: Strutz-Seebohm N, Gutcher I, Decher N, Steinmeyer K, Lang F, Seebohm G. Comparison of potent Kv1.5 potassium channel inhibitors reveals the molecular basis for blocking kinetics and binding mode. Cell Physiol Biochem. 2007;20(6):791-800. PubMed PMID: 17982261.

3: Knobloch K, Brendel J, Rosenstein B, Bleich M, Busch AE, Wirth KJ. Atrial-selective antiarrhythmic actions of novel Ikur vs. Ikr, Iks, and IKAch class Ic drugs and beta blockers in pigs. Med Sci Monit. 2004 Jul;10(7):BR221-8. Epub 2004 Jun 29. PubMed PMID: 15232496.

4: Knobloch K, Brendel J, Peukert S, Rosenstein B, Busch AE, Wirth KJ. Electrophysiological and antiarrhythmic effects of the novel I(Kur) channel blockers, S9947 and S20951, on left vs. right pig atrium in vivo in comparison with the I(Kr) blockers dofetilide, azimilide, d,l-sotalol and ibutilide. Naunyn Schmiedebergs Arch Pharmacol. 2002 Nov;366(5):482-7. Epub 2002 Sep 5. PubMed PMID: 12382079.

5: Bachmann A, Gutcher I, Kopp K, Brendel J, Bosch RF, Busch AE, Gögelein H. Characterization of a novel Kv1.5 channel blocker in Xenopus oocytes, CHO cells, human and rat cardiomyocytes. Naunyn Schmiedebergs Arch Pharmacol. 2001 Nov;364(5):472-8. PubMed PMID: 11692231.