Biological Activity
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
Dofetilide is also offered as part of the Tocriscreen Plus and Tocriscreen Library of FDA-Approved Compounds. Find out more about compound libraries available from Tocris.
Technical Data
| M. Wt | 441.56 |
| Formula | C19H27N3O5S2 |
| Storage | Store at RT |
| Purity | ≥99% (HPLC) |
| CAS Number | 115256-11-6 |
| PubChem ID | 71329 |
| InChI Key | IXTMWRCNAAVVAI-UHFFFAOYSA-N |
| 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.
All Tocris products are intended for laboratory research use only.
Solubility Data
| Solvent | Max Conc. mg/mL | Max Conc. mM | |
|---|---|---|---|
| Solubility | |||
| DMSO | 44.16 | 100 |
Preparing Stock Solutions
The following data is based on the product molecular weight 441.56. Batch specific molecular weights may vary from batch to batch due to solvent of hydration, which will affect the solvent volumes required to prepare stock solutions.
| 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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Product Datasheets
References
References are publications that support the products' biological activity.
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 dofetilide. 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
Keywords: 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, Voltage-Gated, Potassium, Channels, Tocris Bioscience
