Zafirlukast

Catalog No.S1633 Batch:S163305

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Technical Data

Formula

C31H33N3O6S
Molecular Weight 575.68 CAS No. 107753-78-6
Solubility (25°C)* In vitro DMSO 100 mg/mL (173.7 mM)
Water Insoluble
Ethanol Insoluble
In vivo (Add solvents to the product individually and in order)
Clear solution
5% DMSO 95% corn oil
0.6mg/ml Taking the 1 mL working solution as an example, add 50 μL of 12 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. 
Clear solution
5%DMSO 40%PEG300 5%Tween80 50%ddH2O
5.0mg/ml Taking the 1 mL working solution as an example, add 50 μL of 100 mg/ml clarified DMSO stock solution to 400 μL PEG300, mix evenly to clarify it; add 50 μL Tween80 to the above system, mix evenly to clarify it; then continue to add 500 μL ddH2O to adjust the volume to 1 mL. The mixed solution should be used immediately for optimal results. 
* <1 mg/ml means slightly soluble or insoluble.
* Please note that Selleck tests the solubility of all compounds in-house, and the actual solubility may differ slightly from published values. This is normal and is due to slight batch-to-batch variations.
* Room temperature shipping (Stability testing shows this product can be shipped without any cooling measures.)

Preparing Stock Solutions

Biological Activity

Description Zafirlukast is an oral leukotriene receptor antagonist (LTRA), used to prevent asthma symptoms.
Targets
leukotriene receptor [1]
In vitro 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. [1]
In vivo 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. [2]

Protocol (from reference)

Selleck's Zafirlukast has been cited by 7 publications

Inhibition of CysLTR1 reduces the levels of aggregated proteins in retinal pigment epithelial cells [ Sci Rep, 2023, 13(1):13239] PubMed: 37580467
Inhibition of CysLTR1 reduces the levels of aggregated proteins in retinal pigment epithelial cells [ Sci Rep, 2023, 13(1):13239] PubMed: 37580467
Zafirlukast Induces VHL- and HIF-2α-Dependent Oxidative Cell Death in 786-O Clear Cell Renal Carcinoma Cells [ Int J Mol Sci, 2022, 23(7)3567] PubMed: 35408930
Development of potent and selective inhibitors targeting the papain-like protease of SARS-CoV-2 [ Cell Chem Biol, 2021, S2451-9456(21)00213-0] PubMed: 33979649
Chronobiological activity of cysteinyl leukotriene receptor 1 during basal and induced autophagy in the ARPE-19 retinal pigment epithelial cell line [ Aging (Albany NY), 2021, 13(24):25670-25693] PubMed: 34919533
Cysteinyl leukotriene receptor 1 modulates autophagic activity in retinal pigment epithelial cells [ Sci Rep, 2020, 10(1):17659] PubMed: 33077798
Pranlukast is a novel small molecule activator of the two-pore domain potassium channel TREK2. [ Biochem Biophys Res Commun, 2019, 520(1):35-40] PubMed: 31564414

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SHIPPING AND STORAGE
Selleck products are transported at room temperature. If you receive the product at room temperature, please rest assured, the Selleck Quality Inspection Department has conducted experiments to verify that the normal temperature placement of one month will not affect the biological activity of powder products. After collecting, please store the product according to the requirements described in the datasheet. Most Selleck products are stable under the recommended conditions.

NOT FOR HUMAN, VETERINARY DIAGNOSTIC OR THERAPEUTIC USE.