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Mass Spectrometric Study of 8-Azaxanthine Derivatives

V. Kováčik, A. Rybár, and A. Bozóová

Institute of Chemistry, Slovak Academy of Sciences, SK-842 38 Bratislava


Abstract: N-3 and N-9 derivatives of 8-azaxanthine have been studied using electron impact mass spectrometry. Mass-analyzed metastable ion kinetic energy, linked scan at the constant B/E, collision-induced dissociation methods, as well as high-resolution measurements have been used for evaluation of complete fragmentation schemes. Two fragmentation pathways of 8-azaxanthine skeleton begin by the elimination of CH3NCO or N2 molecule. The primary elimination of nitrogen molecules is characteristic difference in fragmentation routes of 8-azaxanthines in comparison to purine. Another pathway leads to fragmentation of the N-3 and N-9 substituents.

Full paper in Portable Document Format: 486a415.pdf


Chemical Papers 48 (6) 415–422 (1994)

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