ドフェチリド

危険有害性情報のコード(GHS)

• 絵表示(GHS)

  

• 注意喚起語

  Danger

• 危険有害性情報

  H302：飲み込むと有害

  H360：生殖能または胎児への悪影響のおそれ

• 注意書き

  P201：使用前に取扱説明書を入手すること。

  P202：全ての安全注意を読み理解するまで取り扱わないこ と。

  P264：取扱い後は皮膚をよく洗うこと。

  P264：取扱い後は手や顔をよく洗うこと。

  P270：この製品を使用する時に、飲食または喫煙をしないこ と。

  P301+P312：飲み込んだ場合：気分が悪い時は医師に連絡する こと。

  P308+P313：暴露または暴露の懸念がある場合：医師の診断/手当てを 受けること。

ドフェチリド 価格

MSDS Information

• Dofetilide

ドフェチリド 化学特性,用途語,生産方法

• 用途

  選択的なカリウムチャネルブロッカーです。hERG K+ チャネルをブロックします。 class Ⅲ抗不整脈作用を示します。

• 用途

  選択的なカリウムチャネルブロッカーです。hERG K+ チャネルをブロックします。 class Ⅲ抗不整脈作用を示します。

• 効能

  抗不整脈薬, カリウムチャネル遮断薬

• 説明

  Dofetilide was launched in the US as a novel class III antiarrhythmic for treatment of cardiac patients with highly symptomatic atrial fibrillation This bisarylsulfonamide can be obtained by a three step synthesis starting from 4-nitro-N-methylphenethylamine and involving simultaneous nitro reduction and mesylation on both aromatic amine functions. In contrast to other class III antiarrhythmic agents such as amiodarone, dofetilide potently and selectively inhibits a single potassium channel, Ikr, the rapidly acting component of the delayed rectifier potassium current, Accordingly, by blocking the open state of Ikr, dofetilide is able to prolong the effective refractory period (ERP) in both atrial and ventricular myocardium and the monophasic action potential duration. Moreover, as it targets only one cardiac ion channel, it does not produce any effects on the sinus node, cardiac conduction system and other extracardiac organs, making it unique among established class III agents. Several pharmacological studies with models using different animal species indicated that dofetilide was a potent and highly selective class III antiarrhythmic agent devoid of cardiodepressive effects. During clinical trials in patients with paroxysmal atrial or supraventricular fibrillation, dofetilide was found to increase atrial and ventricular refractory periods without affecting conduction or sinus node function. If increases in the QT/QTc interval after oral or intravenous dofetilide are expected, as for other class III antiarrhythmic agents, other electrocardiographic intervals are unaffected.

• 化学的特性

  White Crystalline Solid

• 使用

  Dofetilide (90%) , is a potassium channel blocker. Antidysrhythmic drug.

• 定義

  ChEBI: A tertiary amino compound that is N-ethyl-N-methylethanamine substituted by a 4-[(methylsulfonyl)amino]phenoxy and a 4-[(methylsulfonyl)amino]phenyl group at the terminal carbon atoms respectively. It is used as an an i-arrhythmia drug.

• 一般的な説明

  Dofetilide, N-[4-(3-{[2-(4-methanesulfonylaminophenyl)ethyl]methylamino}propoxy)phenyl]methane-sulfonamide (Tikosyn), acts by blocking thecardiac ion channel carrying the rapid component of thedelayed rectifier potassium currents (Ikr) and is used toterminate supraventricular arrhythmias, prevent the recurrenceof atrial fibrillation, and treat life-threatening ventriculararrhythmias. Unlike sotalol and ibutilide, whichare also methanesulfonanilides, it has no effect on adrenergicreceptors or sodium channels, respectively. Dofetilidehas high specificity for the delayed rectifier potassiumcurrents.

• 生物活性

  Selective potassium channel blocker. Blocks hERG K + channels; inhibits the rapid delayed-rectifier K + current (I Kr ). Displays class III antiarrhythmic properties.

• 臨床応用

  Dofetilide (Tikosyn) is a “pure” class III drug. It prolongs the cardiac action potential and the refractory period by selectively inhibiting the rapid component of the delayed rectifier potassium current (IKr).
  Dofetilide is approved for the treatment of atrial fibrillation and atrial flutter. Because of the lack of significant hemodynamic effects, dofetilide may be useful in patients with CHF who are in need of therapy for supraventricular tachyarrhythmias. Dofetilide is not indicated for use in the setting of ventricular arrhythmias.

• 副作用

  The incidence of noncardiac adverse events is not different from that of placebo in controlled clinical trials. The principal cardiac adverse effect is the risk of torsades de pointes due to QT prolongation.The risk is approximately 3%, and most cases are observed in the first 3 days of therapy.As such, initiation of therapy should be performed with the patient in hospital.

• 薬物相互作用

  Verapamil increases serum dofetilide levels, as do drugs that inhibit cationic renal secretion, such as ketoconazole and cimetidine, raise serum levels.

• 代謝

  Dofetlide is used orally to suppress atrial fibrillation and flutter. It is more potent and selective than other Class III methanesulfonanilides, including sotalol. Dofetilide is well absorbed from the gastrointestinal tract, with a bioavailability of 96 to 100%. The bioavailability of oral dofetilide is not affected by food or antacids. Protein binding is 60 to 70%. Dofetilide is metabolized by the hepatic CYP3A4 enzyme system via N-dealkylation and N-oxidation to inactive or minimally active metabolites. Of the approximately 80% of a dose excreted in urine, approximately 80% is excreted unchanged, with the other 20% as metabolites.

• 予防処置

  Contraindications include baseline prolongation of the QT interval, use of other QT-prolonging drugs; history of torsades de pointes; a creatinine clearance of less than 20 mL/minute; simultaneous use of verapamil, cimetidine, or ketoconazole; uncorrected hypokalemia or hypomagnesemia; and pregnancy or breast-feeding.

ドフェチリド 上流と下流の製品情報

ドフェチリド 生産企業

Global(309)Suppliers

ドフェチリド スペクトルデータ(¹HNMR)

115256-11-6, ドフェチリド キーワード