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.
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Dolnikowski, G.G., Gross, M.L. & Cavalieri, E.L. Isomer differentiation in 7, 12-dimethylbenz[a]anthracene-pyridine adducts by fast atom bombardment tandem mass spectrometry. J Am Soc Mass Spectrom 2, 256–258 (1991). https://doi.org/10.1016/1044-0305(91)80053-A
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DOI: https://doi.org/10.1016/1044-0305(91)80053-A