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  • Zafirlukast

    • 扎鲁司特;ICI 204219
    货号: abs816389
    CAS号: 107753-78-6
    分子式: C31H33N3O6S
    分子量: 575.68
    产品说明书
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    货号-规格 货期 价格 数量
    abs816389-25mg 1-2周 ¥524.00
    - +
    abs816389-50mg 1-2周 ¥847.00
    - +
    abs816389-100mg 1-2周 ¥1126.00
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    产品描述
    描述

    Zafirlukast is in a class of medications called leukotriene receptor antagonists (LTRAs). It works by blocking the action of certain natural substances that cause swelling and tightening of the airways. In a study, pranlukast or zafirlukast significantly inhibited 10 μM LTD4-evoked 35SO4 output in a concentration- dependent fashion, with maximal inhibitions of 83% at 10 μM pranlukast and 78% at 10 μM zafirlukast, and IC50 values of 0.3 μM for pranlukast and 0.6 μM for zafirlukast. Both pranlukast and zafirlukast showed moderate inhibition of CYP2C9-catalysed tolbutamide 4-methylhydroxylation, competitively inhibiting tolbutamide 4-methylhydroxylation with estimated mean Ki values of 3.82 ± 0.50 and 5.86 ± 0.08 μM, respectively.Zafirlukast inhibited the hydroxylation of tolbutamide (CYP2C9; mean IC50=7.0 µM).

    纯度
    >98%
    储存/保存方法
    Store at -20℃ for one year(Powder);Store at 2-4℃ for two weeks;Store at -20℃ for six months after dissolution.
    基本信息
    别名
    扎鲁司特;ICI 204219
    外观
    固体粉末
    可溶性/溶解性
    DMSO :93 mg/mL (161.5 mM)
    生物活性
    靶点
    leukotriene receptor
    In vitro(体外研究)
    Zafirlukast is similar to 3-methylindole because it contains an N-methylindole moiety that has a 3-alkyl substituent on the indole ring. Zafirlukast readily forms (10% conversion in 60 min) a GSH adduct with molecular mass of 880 Da upon incubation with horseradish peroxidase. Zafirlukast produces time-, concentration-, and NADP(H)-dependent inactivation of CYP3A4. Zafirlukast is shown to inhibit CYP3A enzyme activity in vitro (nonpreincubation inhibition) with a Ki of 2 μM in one report, but higher values have been published, and our KI for the inactivation process is 13.4 μM. Zafirlukast has high plasma protein binding (>99%), which would lower the free-drug concentration. Zafirlukast undergoes two successive one-electron oxidations to afford a highly electrophilic α,β-unsaturated iminium species, which reacts spontaneously with GSH to yield the observed adduct.
    In vivo(体内研究)
    Zafirlukast is a potent and selective cysteinyl leukotriene receptor antagonist which is used mainly in the prophylaxis of bronchial asthma. Zafirlukast in a dose of 80 mg/kg orally produces a significant decrease in tissue malondialdehyde, myeloperoxidase, and an increase in both reduced glutathione and catalase levels, while there is no significant changes with the rectal route.
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    • 实验方法 实验条件
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