Uses of Chloromethyldimethylsilyl Ethers as Derivatives for Combined Gas Chromatography-Mass Spectrometry of Steroids
作者:
C.J. W. Brooks,
B.S. Middleditch,
期刊:
Analytical Letters
(Taylor Available online 1972)
卷期:
Volume 5,
issue 9
页码: 611-618
ISSN:0003-2719
年代: 1972
DOI:10.1080/00032717208064338
出版商: Taylor & Francis Group
关键词: Chloromethyldimethylsilyl ethers;trimethylsilyl ethers;gas chromatography;mass spectrometry;steroids
数据来源: Taylor
摘要:
Chloromethyldimethylsilyl (CMDMS) ethers are useful derivatives for combined gas chromatography-mass spectrometry. They have characteristically longer retention times than the corresponding trimethylsilyl (TMS) derivatives, and this permits effective fractionation of mono-, di-, and trihydroxy steroids. CMDMS ethers provide mass spectra comparable with those of TMS ethers, but ions containing the CMDMS group are readily recognisable in the former by virtue of the two abundant natural isotopes of chlorine. This facilitates interpretation of spectra and may be expected to aid the location of drug metabolites by selective ion monitoring.
点击下载:
PDF (248KB)
返 回