A sensitive and specific method for the quantitative determination of a new antitumor agent, 1-(2-chloroethyl)-3-(2,6-dioxo-3-piperidyl)-l-nitrosourea, (PCNU) has been developed for the analysis of ,plasma. This assay involves extraction of the plasma sample, separation of the drug by thin-layer chr
Study of 2-Iodo-3-(phenylsulfinyl)-2-propen-1-ol and its Analogues by Self-chemical Ionization Mass Spectrometry
✍ Scribed by Fang Zhang; Yin-Long Guo; Qi Wei; Sheng-Ming Ma
- Publisher
- John Wiley and Sons
- Year
- 2010
- Tongue
- English
- Weight
- 262 KB
- Volume
- 19
- Category
- Article
- ISSN
- 0256-7660
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✦ Synopsis
Abstract
The self‐chemical ionization (SCI) in quadrupole mass spectrometry was developed to determine the structure of (E)‐2‐iod‐3‐(phenylsulfinyl)‐2‐propen‐1‐ol and its 6 analogues. Some techniques that increase the sample quantity and heating speed and shorten vaporization time to obtain high pressure in the ion source were applied to increase the chance of ionmolecule reactions. The structures of these compounds were identified by mass spectral data of MH^+^ and some characteristic fragment ions. Compared with the mass spectra for 2‐iodo‐3‐(phenylsulfinyl)‐2‐propen‐l‐ols obtained in electron impact ionization (EI), SCI showed more information, in particular, an improvement in amount of information at the high mass area. The absence of reagent gas makes the spectrum clean and simple.
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