title: Determination of ephedrine-type alkaloids in dietary supplements by LC/MS using a stable-isotope labeled internal standard.
authors: US Food and Drug Administration, Center for Food Safety and Applied Nutrition, Washington, DC 20204, USA.
authors: M L
authors: ML
authors: Gay
authors: K D
authors: KD
authors: White
authors: W R
authors: WR
authors: Obermeyer
authors: J M
authors: JM
authors: Betz
authors: S M
authors: SM
authors: Musser
mesh_terms: D002244:Carbon; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D002853:Chromatography, Liquid / Q000379:methods*; D019587:Dietary Supplements / Q000032:analysis*; D004809:Ephedrine / Q000032:analysis*; D007202:Indicators and Reagents; D007554:Isotopes; D013058:Mass Spectrometry / Q000379:methods*; D011786:Quality Control
chemical_list: D007202:Indicators and Reagents; D007554:Isotopes; D002244:Carbon; D004809:Ephedrine