549-56-4
549-56-4 structure
- Name: Quinine bisulfate
- Chemical Name: quinine sulfate
- CAS Number: 549-56-4
- Molecular Formula: C40H50N4O8S
- Molecular Weight: 746.91200
- Catalog: analytical chemistry Standard Pharmacopoeia Standards and Magazine Standards
- Create Date: 2018-05-10 08:00:00
- Modify Date: 2025-08-26 11:05:50
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Quinidine is an antiarrhythmic agent. Quinidine is a potent, orally active, selective cytochrome P450db inhibitor. Quinidine is also a K+ channel blocker with an IC50 of 19.9 μM. Quinidine can be used for malaria research[1][2][3].
| Name | quinine sulfate |
|---|---|
| Synonyms |
EINECS 208-970-9
MFCD00078499 chinidinesulfate |
| Description | Quinidine is an antiarrhythmic agent. Quinidine is a potent, orally active, selective cytochrome P450db inhibitor. Quinidine is also a K+ channel blocker with an IC50 of 19.9 μM. Quinidine can be used for malaria research[1][2][3]. |
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| Related Catalog | |
| In Vitro | Quinidine sulfate is an anti-arrythmic drug which affects ionic currents in heart muscle and which has also been shown to be a potent blocker of several classes of K+ channel in a variety of cell types[1]. Bath application of quinidine sulfate causes a dose-dependent reduction of the peak amplitude of Ik. The Kd for blockade of Ik at 0 mV is estimated to be 41 μM[1]. Quinidine sulfate elicits a dose-dependent increase of the rate of the decay of Ik and this effect is enhanced by membrane depolarization. Quinidine also causes a 5 mV hyperpolarizing shift of the steady-state inactivation curve and increases the half-time for recovery from inactivation. Quinidine does not affect the onset of inactivation measured at -30 mV[1]. |
| In Vivo | Quinidine sulfate is rapidly absorbed, with peak plasma concentrations 60-90 min after an oral dose. Other salts (gluconate, polygalacturonate) are more slowly absorbed, with lower peak concentrations[2]. Quinidine sulfate is approximately 70-90 % bound to plasma proteins. It undergoes hepatic oxidative metabolism to form an N-oxide, a 3-hydroxy form, an O-demethyl form and 2'-quinidinone[2]. Quinidine sulfate inhibits metabolism of amphetamine in rats. Quinidine pretreatment results in a significant decrease in the excretion of p-hydroxyamphetamine at 24 and 48 h to 7.2 and 24.1% of the vehicle-control levels, respectively, accompanied by a significant increase in amphetamine excretion between 24 and 48 h to 542% of the control[3]. |
| References |
| Boiling Point | 1136.7ºC at 760mmHg |
|---|---|
| Molecular Formula | C40H50N4O8S |
| Molecular Weight | 746.91200 |
| Flash Point | 641.2ºC |
| Exact Mass | 746.33500 |
| PSA | 174.16000 |
| LogP | 6.65020 |
| RIDADR | UN 1544 |
|---|---|
| Packaging Group | III |
| Hazard Class | 6.1(b) |