Pricing Availability   Qty
Description: KV11.1 (hERG) channel blocker; inhibits rapid delayed rectifier K+ current (IKr)
Alternative Names: Tikosyn, UK 68798
Chemical Name: 1-(4-Methanesulphonamidophenoxy)-2-[N-(4-methanesulphonamidophenethyl)-N-methylamino]ethane
Purity: ≥99% (HPLC)
Citations (3)
Reviews (1)
Literature (5)

Biological Activity for Dofetilide

Dofetilide is a selective potassium channel blocker. Blocks KV11.1 (hERG) channels; inhibits the rapid delayed-rectifier K+ current (IKr). Displays class III antiarrhythmic properties.

Licensing Information

Sold for research purposes under agreement from Pfizer Inc.

Compound Libraries for Dofetilide

Dofetilide is also offered as part of the Tocriscreen 2.0 Max and Tocriscreen FDA-Approved Drugs. Find out more about compound libraries available from Tocris.

Technical Data for Dofetilide

M. Wt 441.56
Formula C19H27N3O5S2
Storage Store at RT
Purity ≥99% (HPLC)
CAS Number 115256-11-6
PubChem ID 71329
Smiles CN(CCC2=CC=C(NS(=O)(C)=O)C=C2)CCOC1=CC=C(NS(=O)(C)=O)C=C1

The technical data provided above is for guidance only. For batch specific data refer to the Certificate of Analysis.

Tocris products are intended for laboratory research use only, unless stated otherwise.

Solubility Data for Dofetilide

Solvent Max Conc. mg/mL Max Conc. mM
DMSO 44.16 100

Preparing Stock Solutions for Dofetilide

The following data is based on the product molecular weight 441.56. 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.

Select a batch to recalculate based on the batch molecular weight:
Concentration / Solvent Volume / Mass 1 mg 5 mg 10 mg
1 mM 2.26 mL 11.32 mL 22.65 mL
5 mM 0.45 mL 2.26 mL 4.53 mL
10 mM 0.23 mL 1.13 mL 2.26 mL
50 mM 0.05 mL 0.23 mL 0.45 mL

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References for Dofetilide

References are publications that support the biological activity of the product.

Gwilt et al (1991) UK-68,798: a novel, potent and highly selective class III antiarrhythmic agent which blocks potassium channels in cardiac cells. J.Pharmacol.Exp.Ther. 256 318 PMID: 1988662

Carmeliet (1992) Voltage- and time-dependent block of delayed K+ current in cardiac myocytes by dofet. J.Pharmacol.Exp.Ther. 262 809 PMID: 1501123

Finlayson et al (2001) [3H]Dofetilide binding in SHSY5Y and HEK293 cells expressing a HERG-like K+ channel. Eur.J.Pharmacol. 412 203 PMID: 11166283

If you know of a relevant reference for Dofetilide, please let us know.

View Related Products by Product Action

View all Voltage-gated Potassium (KV) Channel Blockers

Keywords: Dofetilide, Dofetilide supplier, UK68798, hERG, K+, potassium, channels, blockers, inhibits, IKR, delayed, rectifier, currents, Kv, voltage-gated, voltage-dependent, Human, Ether-A-Go-Go, Gene, Pfizer, KV11.1, Tikosyn, UK, 68798, Voltage-Gated, Potassium, Channels, 3757, Tocris Bioscience

3 Citations for Dofetilide

Citations are publications that use Tocris products. Selected citations for Dofetilide include:

Bhave et al (2011) Development of a selective small-molecule inhibitor of Kir1.1, the renal outer medullary potassium channel. Mol Pharmacol 79 42 PMID: 20926757

McKeithan et al (2017) An Automated Platform for Assessment of Congenital and Drug-Induced Arrhythmia with hiPSC-Derived Cardiomyocytes. Front Physiol 8 766 PMID: 29075196

Carstensen et al (2019) Effects of UK 68798 and RS 43285 on atrial fibrillatory rate in a horse model of acutely induced atrial fibrillation. J Cardiovasc Electrophysiol 30 596 PMID: 30661267

Do you know of a great paper that uses Dofetilide from Tocris? Please let us know.

Reviews for Dofetilide

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Dofetilide was used to study concentration dependent blocking action on brain Kv channels.
By Anonymous on 10/31/2018
Assay Type: In Vitro
Species: Human

Dofetilide was used to study concentration dependent blocking action on voltage gated potassium channels on human brain cells. Dofetilide showed increasing Kv channel blocking but at high concnetrations the blocking action is hampered.

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