文章基本信息

标题：Syntheses of all singly labeled [15N]adenines: Mass spectral fragmentation of adenine
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作者：Maria Del Carmen G. Barrio ; David I. C. Scopes ; Joseph B. Holtwick 等
期刊名称：Proceedings of the National Academy of Sciences
印刷版ISSN：0027-8424
电子版ISSN：1091-6490
出版年度：1981
卷号：78
期号：7
页码：3986-3988
DOI：10.1073/pnas.78.7.3986
语种：English
出版社：The National Academy of Sciences of the United States of America
摘要：Syntheses of all five of the singly labeled [15N]adenines are now provided. The presence or absence of two-bond 15N-1H spin couplings in their 1H NMR spectra confirm the location of the isotope in each case. The fragmentation patterns in their mass spectra are indicative of the sequential losses of HCN units and of CH2N2 from adenine upon electron impact.
关键词：electron impact ; isotope ; polynitrogen heterocycle