On-column gas chromatographic mass spectrometric assay for metabolic profiling of valproate in brain tissue and serum

被引:15
作者
Darius, J
机构
[1] Department of Clinical Pharmacology, University Hospital
来源
JOURNAL OF CHROMATOGRAPHY B-BIOMEDICAL APPLICATIONS | 1996年 / 682卷 / 01期
关键词
derivatization; GC; valproate;
D O I
10.1016/0378-4347(95)00559-5
中图分类号
Q5 [生物化学];
学科分类号
071010 ; 081704 ;
摘要
A sensitive capillary gas chromatographic-mass spectrometric method for the determination of valproic acid and at least twelve of its metabolites in serum based on tert.-butyldimethylsilyl (tBDMS) derivatives is described. Low detection limits are achieved by using a direct on-column injection technique. The addition of dry pyridine during the derivatization step now leads to uniform formation of 3-keto-VPA di-tBDMS derivatives and thereby avoids the necessity of a deuterated internal standard. A novel extraction procedure for metabolic profiling of valproate in brain tissue samples is presented. Using this method, (Z)-2-en-VPA was determined in rat brain tissue for the first time.
引用
收藏
页码:67 / 72
页数:6
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