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Mass spectrometric studies of trimethylsilylpantothenic acid and related substances

✍ Scribed by Michael Rychlik

Publisher
John Wiley and Sons
Year
2001
Tongue
English
Weight
153 KB
Volume
36
Category
Article
ISSN
1076-5174

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✦ Synopsis

Abstract

The characteristic fragment of trimethylsilylated pantothenic acid (TMS‐PA) at m/z 291 upon electron ionization was shown to originate from the molecular ion by a McLafferty rearrangement instead of by ejection of 1,1,3,3‐tetramethyl‐1,3‐disilacyclobutane. The verification consisted of labelling experiments and high‐resolution mass spectrometry of the fragment and studies on its isotopic distribution. The remaining fragmentation pathways of TMS‐PA were clarified by B/E‐linked scans and collision‐induced dissociation. Copyright © 2001 John Wiley & Sons, Ltd.

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