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http://dx.doi.org/10.1016/0278-5846(85)90052-1

has been cited by the following article:

• TITLE: Fast and Sensitive Chiral Analysis of Amphetamines and Cathinones in Equine Urine and Plasma Using Liquid Chromatography Tandem Mass Spectrometry

  AUTHORS: Caroline C. Wang, Petra Hartmann-Fischbach, Tim R. Krueger, Alisha Lester, Aaron Simonson, Terry L. Wells, Max O. Wolk, Nick J. Hidlay

  KEYWORDS: Amphetamines and Cathinones, Equine Plasma and Urine, Chiral Analysis, Liquid Chromatography Tandem Mass Spectrometry

  JOURNAL NAME: American Journal of Analytical Chemistry, Vol.6 No.13, December 4, 2015

  ABSTRACT: A simple, rapid, sensitive and reproducible method for enantiomer analysis of methamphetamine, amphetamine, cathinone and methcathinone was developed and validated. The compounds were extracted from equine plasma and urine using a fast liquid-liquid extraction procedure. Only one milliliter plasma and one hundred microliter urine sample is needed for analysis. The extraction procedure had good recovery (>70%) and the matrix effect was negligible. Enantiomer differentiation and confirmation were achieved using liquid chromatography with chiral stationary phase and mass spectrometry detection. The method demonstrated excellent reproducibility with intra-day and inter-day precision of lower than 5%. The lower limits of detection for all of the compounds studied here were at low pg/mL level for both plasma and urine. This is the first report of the analysis of four chiral compounds in equine plasma and urine. Routine application was demonstrated for (S)- and (R)-enantiomer differentiation.