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Determination of idebenone in plasma by HPLC/MS
1Clinical Pharmacological Research Center, Peking Union Medical College Hospital, Peking Union Medical College, Beijing 100730, China. peihu@public3.bta.net.cn
Acta Pharmacologica Sinica
|April 28, 2001
Summary
A new LC/MS-APCI method accurately measures idebenone (Ide) in human plasma. This sensitive technique offers improved selectivity and speed compared to traditional HPLC methods for idebenone analysis.
Area of Science:
- Pharmacokinetics
- Analytical Chemistry
- Biomedical Analysis
Background:
- Idebenone (6-(10-hydroxydecyl)-2,3-dimethoxy-5-methyl-p-benzoquinone) is a compound requiring precise quantification in biological matrices.
- Accurate measurement of idebenone in human plasma is crucial for pharmacokinetic studies and therapeutic drug monitoring.
Purpose of the Study:
- To establish a highly sensitive analytical method for determining idebenone concentrations in human plasma.
- To validate the developed method for reliable quantification.
Main Methods:
- High-performance liquid chromatography-mass spectrometry coupled with an atmosphere pressure chemical ionization source (LC/MS-APCI) was employed.
- Method validation included assessment of separation, linearity, and sensitivity.
Main Results:
- The LC/MS-APCI method demonstrated excellent chromatographic separation with no interfering peaks.
- Calibration curves showed high linearity (R² > 0.999) over the range of 20-600 µg/L.
- The lower limit of quantification for idebenone was determined to be 20 µg/L, with a Cmax of (316 ± 85) µg/L at Tpeak of (96 ± 34) min after a 30 mg oral dose.
Conclusions:
- The developed LC/MS-APCI method provides superior sensitivity and selectivity for idebenone analysis in human plasma.
- This technique is more time-efficient compared to conventional HPLC methods.
- The validated method is suitable for accurate pharmacokinetic profiling of idebenone.