Isomer differentiation in 7, 12-dimethylbenz[a]anthracene-pyridine adducts by fast atom bombardment tandem mass spectrometry

G. G. Dolnikowski, M. L. Gross, E. L. Cavalieri

Research output: Contribution to journalArticle

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Abstract

Three isomeric 7,12-dL-nethylbenz[α]anthracene-pyridine adduct salts, namely.. the 5-N-pyridinium-7,12-dimethylbenz[α]anthracene perchlorate, the 7-N-pyridiniummethylene-12methylbenz[ α]anthracene picrate, and the 7-methyl-12-N-pyridiniummethylenebenz[ α]anthracene picrate, were studied by fast atom bombardment tandem mass spectrometry using high energy collisional-activated dissociation (CAD). The CAD mass spectra of the molecular cations and the (M - pyridine)+ ions allow one to distinguish positional isomers on the basis of daughter ion peak height ratios. The differences in the CAD mass spectra of the (M - pyridine)+ ions are probably due in part to formation of isomer-specific fused-ring tropyliumions.

Original languageEnglish (US)
Pages (from-to)256-258
Number of pages3
JournalJournal of the American Society for Mass Spectrometry
Volume2
Issue number3
DOIs
StatePublished - May 1991

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ASJC Scopus subject areas

  • Structural Biology
  • Spectroscopy

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