title: Electron impact and chemical ionization mass spectrometry of some butyrophenones.
abstract: The mass spectra of some butyrophenones are presented. Electron impact ionization and chemical ionization with isobutane as the reagent gas are compared. The chemical ionization spectra show the quasi molecular ion (M + H)+ to be the most abundant ion. Important fragments in the electron impact spectra are discussed for easy determination of other similar compounds.
mesh_terms: D002090:Butyrophenones / Q000032:analysis; D004563:Electrochemistry; D004583:Electrons; D013058:Mass Spectrometry / Q000379:methods*
chemical_list: D002090:Butyrophenones