ISSN:
0951-4198
Keywords:
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Physics
Notes:
Successful application of tandem mass spectrometry on a series of the ecdysteroid phosphates (eddysteroids conjugated with phosphoric acid) led to general information for their characterization. The 22-phosphates and the 2-(or 3-)phosphates can be definitely distinguished by their charge-remote fragmentation patterns. In the case of the 22-phosphates, information about the side-chain moiety is readily obtained. In the case of the 2-(or 3-)phosphates, information about the ring as well as the side-chain is readily available. Neither the positional isomers (2- and 3-phosphates) in the A-ring nor the configurational isomers (α and β) can be distinguished.
Additional Material:
2 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/rcm.1290091503
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