Determination of Simvastatin in human plasma by liquid chromatography-mass spectrometry

被引:60
|
作者
Yang, HT
Feng, Y
Luan, YW
机构
[1] Nanjing Kangxing Pharmaceut Ltd, Lab R&D, Nanjing, Peoples R China
[2] Drug Control Inst Jiangsu Prov, Jiangsu, Peoples R China
关键词
Simvastatin;
D O I
10.1016/S1570-0232(02)00800-0
中图分类号
Q5 [生物化学];
学科分类号
071010 ; 081704 ;
摘要
A simple, sensitive and selective liquid chromatography coupled with electrospray ionization mass spectrometry (LC/ESI/MS) method for the determination of simvastatin (I) has been developed. After extraction by ethyl acetate, using lovastatin (II) as internal standard, solutes are separated on a C-18 column with a mobile phase consisting of methanol-water (9:1). Detection is performed on an atmospheric pressure ionization single quadruple mass spectrometer equipped with an ESI interface and operates in positive ionization mode. Simvastatin quantification was realized by computing peak area ratio (I/II) of the extracts analyzed in SIM mode (m/z: 441 and m/z: 427 for I and II, respectively) and comparing them with calibration curve (r=0.9997). Accuracy and precision for the assay were determined by calculating the intra-batch and inter-batch variation at three concentrations 0.1, 5.0, 10.0 ng/ml; the intra batch relative standard deviation (RSD) was less than 10% and ranged from 1.8 to 8.5%, respectively; the inter-batch RSD was less than 20% and ranged from 4.1 to 16.5%. The limit of detection was 0.05 ng/ml. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:369 / 375
页数:7
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