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Unusual behavior of pyrazolo[1,2-a]pyrazoles in fast atom bombardment (fab) and frit-fast atom bombardment (Frit-FAB) mass spectrometry. Influence of the matrix

✍ Scribed by Christine Enjalbal; Jean-Louis Aubagnac; Swiatoslaw Trofimenko; Rosa Claramunt; Dionisia Sanz; José Elguero

Publisher
Journal of Heterocyclic Chemistry
Year
1998
Tongue
English
Weight
383 KB
Volume
35
Category
Article
ISSN
0022-152X

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✦ Synopsis

Abstract

The nature of the matrix used in Fast Atom Bombardment (FAB) mass spectrometry analyses of pyrazolo[1,2‐a]pyrazoles was found to influence significantly their positive and negative ions mass spectra. Indeed the use of glycerol provided an abundant ion corresponding to the protonated molecule (M+H)^+^ whereas the meta‐nitrobenzyl alcohol favored the formation of the radical ion M^+°^. Such results which are in accordance with the oxidoreduction properties of the matrices studied were also established in Frit‐FAB mass spectrometry analyses of pyrazolo[1,2‐a]pyrazoles.

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Influence of the matrix on the analysis of small oligoribonucleotides by fast atom bombardment mass spectrometry
✍ Marek A. Wolter; Joachim W. Engels; Luca Montanarella; Roberto Tilio; Sergio Fac 📂 Article 📅 1995 🏛 John Wiley and Sons 🌐 English ⚖ 474 KB

## Abstract The analysis of oligonucleotides by mass spectrometry should give information on both the molecular mass and sequence. Fast atom bombardment mass spectrometry gives both in one step. Until now glycerol, thioglycerol and triethanolamine have been used as matrices for the analysis of olig