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Study of the Electrospray Ionization Tandem Mass Spectrometry of Sildenafil Derivatives by Dafang Zhong; Jie Xing; Shuqiu Zhang; Lu Sun is a Chemistry article available to read on EtoBox.

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## Abstract A detailed analysis of the product ion spectrum generated from the protonated molecule of sildenafil (Viagra®) under multiple tandem mass spectrometry (ESI‐MS^n^) conditions using an ion‐trap mass spectrometer is reported. Molecular composition data of the fragment ions were obtained with the aid of comparisons of the multiple tandem mass spectra of eight sildenafil derivatives in two series, the structures of which are identical except for some substituted alkyl groups. Attempts have been made to provide rational pathways for the formation of the fragment ions from these protonated sildenafil derivatives. The structure‐fragmentation relationships will facilitate the characterization of the structures of other sildenafil analogs. Copyright © 2002 John Wiley & Sons, Ltd.

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Author

Dafang Zhong; Jie Xing; Shuqiu Zhang; Lu Sun

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 0951-4198)

Published

2002

Language

EN

Field

Chemistry (Physical Sciences)