The gas-phase ion chemistry of protonated melatonin has been investigated by mass spectrometric (MS) techniques involving chemical ionisation, fast atom bombardment and electrospray ionisation. Either naturally- occurring or collision-induced decomposition N-D derivatives obtained by exchange with D(2)O. The analysis of experimental results allows definite pathways for the formation of the ion at m/z 174 to be assigned and sheds some more light on the overall fragmentation pathways. Experiments on labelled derivatives evidenced H-D scrambling processes during fragmentation.
Bongiorno, D., Ceraulo, L., Camarda, L., Ciofalo, M., Ferrugia, M., Indelicato, S., et al. (2009). Gas-phase ion chemistry of protonated melatonin. EUROPEAN JOURNAL OF MASS SPECTROMETRY, 15, 199-208 [10.1255/ejms.968].
Gas-phase ion chemistry of protonated melatonin
BONGIORNO, David;CERAULO, Leopoldo;CAMARDA, Lorenzo;CIOFALO, Maurizio;FERRUGIA, Mirella;INDELICATO, Serena;TURCO LIVERI, Vincenzo
2009-01-01
Abstract
The gas-phase ion chemistry of protonated melatonin has been investigated by mass spectrometric (MS) techniques involving chemical ionisation, fast atom bombardment and electrospray ionisation. Either naturally- occurring or collision-induced decomposition N-D derivatives obtained by exchange with D(2)O. The analysis of experimental results allows definite pathways for the formation of the ion at m/z 174 to be assigned and sheds some more light on the overall fragmentation pathways. Experiments on labelled derivatives evidenced H-D scrambling processes during fragmentation.
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