| Autor: |
Kadentsev, V.I., Chizhov, A.O., Chizhov, O.S., Krupinova, O.N., Rzheznikov, V.M., Golubovskaya, L.E. |
| Zdroj: |
European Journal of Mass Spectrometry; February 2006, Vol. 12 Issue: 1 p75-78, 4p |
| Abstrakt: |
The fragmentation of [M + Na]+ions produced from steroid 11β-nitrates during electrospray ionization (ESI) was studied by using the ion trap MS/MS technique. The [M + Na]+ions eliminate NO2and HNO3for epimers bearing 9β and 9α substituents, respectively. As the main fragmentation pathways are determined mainly by the configuration at C-9 and alternative fragmentation hardly occur, this offers the possibility for deteermining the configurationof the estrane 11β nitrate series at the chiral C-9 center using ESI mass spectrometry. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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