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Experimental and Theoretical Investigation of Sodiated Multimers of Steroid Epimers with Ion Mobility-Mass Spectrometry.

Journal of the American Society for Mass Spectrometry (2016-12-04)
Christopher D Chouinard, Vinícius Wilian D Cruzeiro, Adrian E Roitberg, Richard A Yost
ABSTRACT

Ion mobility-mass spectrometry (IM-MS) has recently seen increased use in the analysis of small molecules, especially in the field of metabolomics, for increased breadth of information and improved separation of isomers. In this study, steroid epimers androsterone and trans-androsterone were analyzed with IM-MS to investigate differences in their relative mobilities. Although sodiated monomers exhibited very similar collision cross-sections (CCS), baseline separation was observed for the sodiated dimer species (R

MATERIALS
Product Number
Brand
Product Description

Supelco
Androsterone, VETRANAL®, analytical standard
Sigma-Aldrich
trans-Androsterone