Characterization of High Molecular Weight Macrocycles by Desorption Chemical Ionization Mass Spectrometry

被引:10
作者
Guglielmetti, Gianfranco [1 ]
Dalcanale, Enrico [1 ]
Bonsignore, Stefanio [1 ]
Vincenti, Marco [1 ]
机构
[1] Ist Guido Donegani SpA, I-28100 Novara, Italy
关键词
D O I
10.1002/rcm.1290030405
中图分类号
Q5 [生物化学];
学科分类号
071010 ; 081704 ;
摘要
A series of multi-armed macrocycles with molecular weights up to 4400 Da was studied by desorption chemical ionization. Both negative- and positive-ion spectra exhibited excellent signal-to-noise ratio, despite the limited amount of material sampled (0.1-1 pmol). The molecular ions generally represent the base peaks of the spectra, but the extent of fragmentation increases as the source temperature is raised.
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页码:106 / 109
页数:5
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