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The negative ion mass spectra of selected nucleosides

✍ Scribed by David L. Smith; Karl H. Schram; James A. McCloskey


Publisher
John Wiley and Sons
Year
1983
Tongue
English
Weight
600 KB
Volume
10
Category
Article
ISSN
1076-5174

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Negative-ion mass spectra of avermectins
✍ VladimΓ­r Havlíček πŸ“‚ Article πŸ“… 1992 πŸ› John Wiley and Sons 🌐 English βš– 238 KB

## Abstract The fragmentation behaviour of a series of six avermectins and two of their derivatives has been studied in the negative‐ion mode in the presence of ammonia. In contrast with positive‐ion mass spectra the negative‐ion spectra show abundant ions in the high mass region. Molecular mass de