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Chinese Journal of Clinical Pharmacology and Therapeutics ›› 2018, Vol. 23 ›› Issue (1): 73-77.doi: 10.12092/j.issn.1009-2501.2018.01.014

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Rapid and sensitive determination of amoxicillin in human plasma by LC-MS/MS and the bioavailability of two amoxicillin capsules

NAN Feng, XU Nan, CHEN Zhihui, XIANG Jin, LIANG Maozhi, TAO Zeting, YE Wei   

  1. GCP Centre, West China Hospital of Sichuan University, Chengdu 610041, Sichuan, China
  • Received:2017-09-20 Revised:2017-12-13 Online:2018-01-26 Published:2018-02-07

Abstract:

AIM: To establish a rapid and sensitive LC-MS/MS method for determination of amoxicillin in human plasma and to study the bioavailability of two amoxicillin capsules.  METHODS: Shimadzu LCMS-8060 series LC-MS/MS was used. Amoxicillin(m/z 366.00/114.00)and d4-amoxicillin (internal standard, m/z 370.10/114.05) were monitored by ESI in MRM model. The analysts were eluted on Waters ACQUITY BEH C18 column ( 2.1×50 mm,1.7 μm) according to gradient elution program. The plasma samples were mixed with internal standard, then precipitated protein by methanol, the supernatants were detected. RESULTS: The linear, accuracy, precision, LLOQ, extraction recovery, specificity, matrix effect, stability of our method all met the guiding principles and criteria of CFDA. Compared with the literature reports, our method was simple, rapid, sensitive and had better chromatographic peaks. CONCLUSION: The method is rapid, sensitive and suitable for the determination of amoxicillin in human plasma. The test capsule is bioequivalence to the reference capsule.

Key words: amoxicillin, plasma concentration, LC-MS, bioequivalence, consistency evaluation

CLC Number: