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Updated: Sep 20, 2025

A Study of the Complexation of MercuryII with Dicysteinyl Tetrapeptides by Electrospray Ionization Mass Spectrometry
Published on: January 8, 2016
Electrospray ionization-tandem mass spectrometric study of fused nitrogen-containing ring systems
Gábor Krajsovszky1, Borbála Dalmadiné Kiss2, Krisztina Ludányi2
1Department of Organic Chemistry, Semmelweis University, Budapest, Hungary.
Abstract:
Four fused nitrogen-containing ring systems were investigated by electrospray ionization-tandem mass spectrometry: Pyridazino-indoles, pyridazino-quinolines, a pyrimido-quinoline derivative and pyrimido-cinnolines. Fragmentation patterns of these compounds are discussed and compared. Several characteristic cross-ring fragments were formed mainly on the pyridazine and pyrimidine rings of the ring systems. The connected Cl, NO2 , Me, Ph and more extended heterocyclic substituents influenced the fragmentation.
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