Study on the determination and chiral inversion of R-salbutamol in human plasma and urine by liquid chromatography–tandem mass spectrometry

The chiral inversion has been a concerned issue during the research and development of a chiral drug. In this study, a sensitive chiral liquid chromatography–tandem mass spectrometry (LC–MS/MS) method was developed for determination of salbutamol enantiomers in human plasma and urine. The chiral inversion mechanism of R-salbutamol was fully investigated for the first time by studying the effects of physicochemical factors, including pH,...