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Electrospray Mass Spectrometric Characterization of a Corticosteroid Dimer

✍ Scribed by Nigel B. Rendell; Graham W. Taylor; Gavin P. Vinson

Publisher: John Wiley and Sons
Year: 1997
Tongue: English
Weight: 130 KB
Volume: 11
Category: Article
ISSN: 0951-4198
DOI: 10.1002/(sici)1097-0231(19970131)11:2<219::aid-rcm740>3.0.co;2-o

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✦ Synopsis

18-Hydroxy-11-deoxycorticosterone forms a non-polar dimer under acidic conditions. The dimer was purified by high performance liquid chromatography and further analysed by electrospray mass spectrometry. The purified dimer has a molecular weight of 656 Da with two free ketone groups and no free hydroxyl functions. The mass spectrometric data suggest a 20,21,20',21'-anhydro dimer structure for the dimer. Microbore high performance liquid chromatography/electrospray mass spectrometry of rat adrenal extracts indicated that both 18-OH-B and 18-OH-DOC were present, although no 18-OH-DOC dimer was detected

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