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Mass spectrometry of 3-phosphoryl derivatives of vitamins D2, D3 and 7-dehydrocholesterol

✍ Scribed by Antonio Selva; Pietro Traldi; Gianfranco Rapi; Mauro Ginanneschi; Mario Chelli

Publisher: John Wiley and Sons
Year: 1983
Tongue: English
Weight: 292 KB
Volume: 10
Category: Article
ISSN: 1076-5174
DOI: 10.1002/bms.1200100205

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✦ Synopsis

Dimethylphosphate esters of vitamins Dz and D, and of 7-dehydrocholesterol give satisfactory mass spectra under electron impact using the direct introduction probe, while this method is not suitable for the related phosphorodichloridates, which undergo to thermal decomposition-polymerization processes. Such processes are avoided using the direct electron impact method. Abundant molecular ions or their protonated analogues are obtained by field desorption.

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