Name: Dofetilide
Brand: Selleck Chemicals
SKU: S1658
Availability: InStock
Rating: 5 (7 reviews)

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Quality Control

Batch: Purity: 100.00%

100.00

Related Targets	CFTR CRM1 CD markers AChR Calcium Channel Sodium Channel GABA Receptor TRP Channel ATPase GluR
Other Potassium Channel Inhibitors	Nicorandil TRAM-34 Sophocarpine ML133 HCl Hydralazine HCl Gliquidone PAP-1 VU0071063 Apamin A2793

Solubility

In vitro
Batch:

DMSO : 88 mg/mL (199.29 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO.)

Water : Insoluble

Ethanol : Insoluble

Molarity Calculator

Mass	Concentration	Volume	Molecular Weight
Mass value Mass unit	Concentration value Concentration unit	Volume value Volume unit	Molecular weight (g/mol)

Dilution Calculator Molecular Weight Calculator

In vivo batch selection In vivo Batch:
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Clear solution	5%DMSO 1 40%PEG300 2 5%Tween80 3 50%ddH2O Validated by Selleck labs. Should you need adjustments to this formulation, contact our sales team for custom testing.	4.400mg/ml (9.96mM)	Taking the 1 mL working solution as an example, add 50 μL of 88 mg/ml clarified DMSO stock solution to 400 μL of PEG300, mix evenly to clarify it; add 50 μL of Tween80 to the above system, mix evenly to clarify; then continue to add 500 μL of ddH2O to adjust the volume to 1 mL. The mixed solution should be used immediately for optimal results.
Clear solution	5% DMSO 1 95% Corn oil Validated by Selleck labs. Should you need adjustments to this formulation, contact our sales team for custom testing.	1.100mg/ml (2.49mM)	Taking the 1 mL working solution as an example, add 50 μL of 22 mg/ml clear DMSO stock solution to 950 μL of corn oil and mix evenly. The mixed solution should be used immediately for optimal results.

In vivo Formulation Calculator (Clear solution)

Step 1: Enter information below (Recommended: An additional animal making an allowance for loss during the experiment)

Dosage: mg/kg

Average weight of animals: g

Dosing volume per animal: μL

Number of animals:

Step 2: Enter the in vivo formulation (This is only the calculator, not formulation. Please contact us first if there is no in vivo formulation at the solubility Section.)

% DMSO

%

% Tween 80

% ddH₂O

% DMSO

+

%

Calculation results:

Working concentration: mg/ml;

Method for preparing DMSO master liquid: mg drug pre-dissolved in μL DMSO ( Master liquid concentration mg/mL, Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug. )

Method for preparing in vivo formulation: Take μL DMSO master liquid, next addμL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH₂O, mix and clarify.

Method for preparing in vivo formulation: Take μL DMSO master liquid, next add μL Corn oil, mix and clarify.

Note: 1. Please make sure the liquid is clear before adding the next solvent.
2. Be sure to add the solvent(s) in order. You must ensure that the solution obtained, in the previous addition, is a clear solution before proceeding to add the next solvent. Physical methods such
as vortex, ultrasound or hot water bath can be used to aid dissolving.

Chemical Information, Storage & Stability

Molecular Weight	441.56	Formula	C₁₉H₂₇N₃O₅S₂	Storage (From the date of receipt)	3 years-20°Cpowder
CAS No.	115256-11-6	Download SDF		Storage of Stock Solutions	1 year-80°Cin solvent 1 month-20°Cin solvent
Synonyms	UK-68798			Smiles	CN(CCC1=CC=C(C=C1)NS(=O)(=O)C)CCOC2=CC=C(C=C2)NS(=O)(=O)C

Mechanism of Action

Targets/IC₅₀/Ki	Potassium channel
In vitro	Dofetilide blocks HERG currents in excised macro patches of Xenopus oocytes. This compound (1 μM) reduces the amplitude of IKr to 61% of control currents in guinea pig cardiomyocytes, as measured by 200-ms test pulses and analysis of the deactivating tail currents of IKr. It increases apico-basal disparity of repolarization, due to a more marked increase of ERPs in the apex than in the base in the intact canine heart.
In vivo	Dofetilide (100 mg/kg, i.v.) does not suppress automaticity arrhythmias induced by two-stage coronary ligation and epinephrine or the coronary ligation and reperfusion arrhythmias, but suppresses the reentry arrhythmia induced by PES in dogs with old myocardial infarction (MI). This compound also shows antiarrhythmic effect in some dogs with digitalis arrhythmia. It increases QT interval and shows negative chronotropic effect like that of other class III drugs, but is different in antiarrhythmic profiles from those of other class III agents such as D-sotalol, E-4031, and MS-551 in that it does not prevent the occurrence of ventricular fibrillation (VF) immediately after coronary reperfusion and has some antiarrhythmic effects on digitalis arrhythmia. This chemical causes increased resorptions and the same stage-dependent malformations in Sprague-Dawley rats.
References	[1] https://pubmed.ncbi.nlm.nih.gov/8921803/ [2] https://pubmed.ncbi.nlm.nih.gov/7528839/ [3] https://pubmed.ncbi.nlm.nih.gov/11862126/ [4] https://pubmed.ncbi.nlm.nih.gov/8891885/ [5] https://pubmed.ncbi.nlm.nih.gov/8761884/

Clinical Trial Information

(data from https://clinicaltrials.gov, updated on 2024-05-22)

NCT Number	Recruitment	Conditions	Sponsor/Collaborators	Start Date	Phases
NCT05906732	Recruiting	Long QT Syndrome	Thryv Therapeutics Inc.	March 12 2023	Phase 1\|Phase 2
NCT01097330	Terminated	Defibrillators Implantable\|Tachycardia Ventricular	Population Health Research Institute\|Abbott Medical Devices\|Hamilton Health Sciences Corporation	August 2010	Phase 3

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Dofetilide Potassium Channel inhibitor

Chemical Structure

Molecular Weight: 441.56