Electrospray ionization-tandem mass spectrometric study of fused nitrogen-containing ring systems.
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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.
SUBMITTER: Krajsovszky G
PROVIDER: S-EPMC9285442 | biostudies-literature |
REPOSITORIES: biostudies-literature
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