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High-energy collisi...
High-energy collision-induced dissociation of oxosteroids derivatised to Girard hydrazones
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Griffiths, WJ (författare)
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- Alvelius, G (författare)
- Karolinska Institutet
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Liu, S (författare)
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- Sjovall, J (författare)
- Karolinska Institutet
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(creator_code:org_t)
- 2017-02-03
- 2004
- Engelska.
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Ingår i: European journal of mass spectrometry (Chichester, England). - : SAGE Publications. - 1469-0667 .- 1751-6838. ; 10:1, s. 63-88
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http://kipublication...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Neutral oxosteroids have been derivatised with Girard T and P hydrazine reagents to give the corresponding Girard hydrazone quaternary ammonium salts. Both Girard T (GT) and Girard P (GP) hydrazones of oxosteroids give very intense [M]+ ion signals in electrospray (ES) mass spectra and fragment within the ES interface and collision cell to give characteristic fragment ions. GT and GP derivatives give informative high-energy collision-induced dissociation spectra, from which the structure of the precursor oxosteroid can be determined. Both charge-remote and charge-mediated mechanisms are responsible for the formation of the fragment ions at high collision-energy.
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- art (ämneskategori)
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