Abstract：
:A sensitive and specific method for the determination of bifendate in human plasma was developed, based on high-performance liquid chromatography (HPLC)-mass spectrometry (MS). The samples were extracted from plasma with diethyl ether, followed by separation and evaporation after addition of internal standard diazepam. The residue was reconstituted in methanol and injected into the HPLC-MS. Chromatography was performed on an Inertsil ODS column with a mobile phase consisting of methanol-distilled water (70/30, v/v) at a flow rate of 0.3 mL/min. Quantitative analysis was achieved by MS detection, using a mass spectrometer equipped with an electrospray ionization interface (ESI) and operated in selected ion monitoring (SIM) and positive-ionization mode using target ions at m/z 419 for bifendate and m/z 285 for internal standard, respectively. The linearity was confirmed in the concentration range of 2-200 ng/mL in human plasma and the precision of this assay was not more than 6.79% over the entire concentration range. The method was sensitive and repeatable enough to be used in pharmacokinetic and bioavailability studies.
journal_name
J Pharm Biomed Analjournal_title
Journal of pharmaceutical and biomedical analysisauthors
Zhou L,Gu L,Wang Y,Liang Jdoi
10.1016/j.jpba.2005.08.007subject
Has Abstractpub_date
2006-03-03 00:00:00pages
1025-30issue
4eissn
0731-7085issn
1873-264Xpii
S0731-7085(05)00568-6journal_volume
40pub_type
临床试验,杂志文章abstract：:A simple and rapid capillary electrophoresis method with UV detection was developed and validated for the determination of rufloxacin hydrochloride in coated tablets. An experimental design strategy (Doehlert design and desirability function) allowed the analytical parameters to be simultaneously optimized in order to...
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