title: Mass spectrometry in the analysis of steroid drugs and their metabolites: electron-impact-induced fragmentation of ring D.
mesh_terms: D002849:Chromatography, Gas; D003903:Deuterium; D004583:Electrons; D004987:Ethers; D007477:Ions; D013058:Mass Spectrometry; D012825:Silicon; D013256:Steroids / Q000032:analysis* / Q000378:metabolism
chemical_list: D004987:Ethers; D007477:Ions; D013256:Steroids; D003903:Deuterium; D012825:Silicon