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Negative ion liquid secondary ion mass spectrometry of carbamate-linked oligodeoxynucleosides. II

✍ Scribed by James A. Laramée; Brian Arbogast; Eugene P. Stirchak; Dwight D. Weller; Max L. Deinzer

Publisher
John Wiley and Sons
Year
1990
Tongue
English
Weight
435 KB
Volume
25
Category
Article
ISSN
1076-5174

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✦ Synopsis

Carbamate-linked oligodeoxynucleosides, in which the backbone consists of carbamate and N-methylcarbamate linkages, have been analyzed by negative ion liquid secondary ion mass spectrometry. Bidirectional sequencedetermining fragmentations are postulated to occur from a common radical anion intermediate that is produced by capture of an ionizing electron by the neutral sample molecule. Fragmentation reactions appear to be related to whether a proton or methyl group is present on the amide nitrogen.

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