doi:

DOI: 10.3724/SP.J.1123.2018.07021

Chinese Journal of Chromatography (色谱) 2018/36:11 PP.1099-1104

Determination of ambroxol hydrochloride in human plasma by ultra high performance liquid chromatography-tandem mass spectrometry and bioequivalence evaluation of its preparation


Abstract:
A rapid, simple and sensitive ultra high performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS) method was developed for the determination of ambroxol hydrochloride in human plasma, and bioequivalence of its preparation was evaluated. The 50 μL-plasma sample was treated with methanol for protein precipitation, while ambroxol-d5 was used as an internal standard (IS). The separation was carried out on a Waters XBridge BEH C18 column (50 mm×2.1 mm, 2.5 μm) by gradient elution at a flow rate of 0.4 mL/min, with 0.1% (v/v) formic acid aqueous solution and methanol containing 0.1% (v/v) formic acid as the mobile phases. The analyte was detected using an electrospray ionization source in positive ion multiple reaction monitoring (MRM) mode. The calibration curves were linear in the range of 2-400 ng/mL (r=0.998). The intra- and inter-run accuracies were 97.1%-108.7%, the intra- and inter-run precisions were 1.0%-5.6%. The method was applied to the determination of the plasma concentration of the six healthy subjects after the oral administration of 30 mg of test and reference preparations. The bioavailability was (102.3±14.8)%. The 90% confidence intervals of the test preparation's pharmacokinetic parameters were 80.0%-125.0% of the reference preparation's corresponding parameters. Thus, it is proved that the test preparation and reference preparation are bioequivalent.

Key words:ultra high performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS),bioequivalence,ambroxol hydrochloride,human plasma

ReleaseDate:2018-11-03 03:01:07



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