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Electrospray ionisation tandem mass spectrometry in the characterisation of isomeric benzofurocoumarins
Author(s) -
Begala M.,
Delogu G.,
Maccioni E.,
Podda G.,
Tocco G.,
Quezada E.,
Uriarte E.,
Fedrigo M. A.,
Favretto D.,
Traldi P.
Publication year - 2001
Publication title -
rapid communications in mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.528
H-Index - 136
eISSN - 1097-0231
pISSN - 0951-4198
DOI - 10.1002/rcm.331
Subject(s) - chemistry , electrospray , degree of unsaturation , tandem mass spectrometry , mass spectrometry , electrospray ionization , dissociation (chemistry) , molecule , collision induced dissociation , electron ionization , analytical chemistry (journal) , protonation , ionization , chromatography , ion , organic chemistry
A set of aminoalkoxy‐substituted, differently annullated furocoumarins, differing in the position of the aminoalkoxy chain and in the unsaturation level of the fused ring, has been subjected to electron impact and electrospray ionisation (ESI) experiments. In order to achieve a distinct characterisation of isomeric compounds, which partially failed under electron impact conditions, collision‐induced dissociation experiments were performed on protonated molecules. The breakdown curves obtained by varying the tickle voltage on an ion trap ESI instrument led to the desired characterisation. Copyright © 2001 John Wiley & Sons, Ltd.