Quinidine

Catalog No.S2571 Batch:S257101

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Technical Data

Formula

C20H24N2O2

Molecular Weight 324.42 CAS No. 56-54-2
Solubility (25°C)* In vitro DMSO 65 mg/mL (200.35 mM)
Ethanol 14 mg/mL (43.15 mM)
Water Insoluble
* <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.)

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Biological Activity

Description

Quinidine is a pharmaceutical agent that acts as a class I antiarrhythmic agent in the heart. Quinidine is a stereoisomer of quinine, originally derived from the bark of the cinchona tree. Quinidine is used to treat abnormal heart rhythms. Like all other class I antiarrhythmic agents, quinidine primarily works by blocking the fast inward sodium current. At micromolar concentrations, quinidine inhibits Na+/K+-ATPase by binding to the same receptor sites as the digitalis glycosides such as ouabain. Quinidine is also used to treat malaria. The half life of oral quinidine is 6 to 8 hours, and it is eliminated by the cytochrome P450 system in the liver. About 20% is excreted unchanged via the kidneys. Quinidine is also an inhibitor of the cytochrome P450 enzyme 2D6, and can lead to increased blood levels of lidocaine, Beta blockers, opioids, and some anti-depressants. Quinidine also inhibits the transport protein P-glycoprotein and so can cause some peripherally acting drugs such as loperamide to have CNS side effects such as respiratory depression if the two drugs are co-administered. [1][2]

Protocol (from reference)

RETURN POLICY
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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.