Development and validation of a high throughput and robust LC-MS/MS with electrospray ionization method for simultaneous quantitation of diltiazem and its two metabolites in human plasma: Application to a bioequivalence study.

A high throughput and specific method using ultra performance liquid chromatography tandem mass spectrometry (UPLC-MS/MS) was developed for the simultaneous determination of diltiazem and its two metabolite (N-desmethyldiltiazem and O-desacetyldiltiazem) in human plasma. A one-step liquid-liquid extraction (LLE) with methyl-t-butyl ether (MTBE) involved for… CONTINUE READING