Abstract
The fragmentation of the methyl oxime, tert-butyldimethylsilyl derivatives of androstanolones under electron impact is strongly directed by the derivatized functional groups. The relative importance of the few major fragmentation pathways varies between positional isomers and stereoisomers. High resolution selected ion monitoring of [M—C4H9]+, and metastable peak monitoring of [M—C4H9]+ [M—C4H9—H(CH3)2SiOH]+, may both be used for high sensitivity analysis.
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