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Negative ion mass spectra of some phenalenone derivatives

✍ Scribed by N.L. Asfandiarov; S.A. Pshenichnyuk; V.G. Lukin; A.S. Vorob’ev; A.I. Fokin


Book ID
108146611
Publisher
Elsevier Science
Year
2008
Tongue
English
Weight
300 KB
Volume
277
Category
Article
ISSN
1387-3806

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Negative-ion mass spectra of avermectins
✍ Vladimír Havlíček 📂 Article 📅 1992 🏛 John Wiley and Sons 🌐 English ⚖ 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