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GC-MS Analysis of Chlorpromazine and Its Major Metabolites in Rat Urine |
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DOI:10.3969/j.issn.1004-4957.年份.月份 |
KeyWord:chlorpromazine urine metabolites GC-MS fragmentation pathway |
Author | Institution |
张思敏,黄克建,李宏森,刘晓锋,李璐,林翠梧 |
1. 广西大学化学化工学院,;2.广西壮族自治区公安厅物证鉴定中心 |
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Abstract: |
A gas chromatography and mass spectrometric(GC-MS) method was developed for the determination of in vivo metabolism of chlorpromazine, and its mass chromatograms were analyzed.Five female Wistar rats were gavaged with chlorpromazine hydrochloride and the 24-hr urine sample after administration were collected.The sample was hydrolyzed,and extracted by solid phase extraction(SPE).The metabolites were analyzed by GC-MS under EI and PCI mode.The mass chromatograms of the parent drug,blank urine and the sample were compared and identified.Sixteen compounds such as phenothiazine,2-chlorophenothiazine,N-(2-propenyl)-2-chlorophenothiazine,promazine,2-hydroxylphenothiazine,demethylchlorpromazine,3-hydroxylpromazine,promazine sulfoxide,2-chloro-7-hydroxylphenothiazine,chlorophenothiazine sulfone,7-hydroxylchlorpromazine,chlorpromazine sulfoxide,dihydroxylchlorpromazine,desmethylchlorpromazine sulfoxide,N-acetyl-demethylchlorpromazine,N-acetyl dedimethylchlorpromazine were identified as metabolites, in which 2-chlorophenothiazine,promazine,demethylchlorpromazine,7-hydroxylchlorpromazine and chlorpromazine sulfoxide were the main metabolites.The results suggested that at least three metabolic pathways for chlorpromazine, including oxidation,demethylation and dehalogenation, are operative in rats. |
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