title: A fast and sensitive HPLC-MS/MS analysis and preliminary pharmacokinetic characterization of cudratricusxanthone B in rats.
abstract: A method for the quantitative analysis of cudratricusxanthone B (CXB) in rat plasma by high performance liquid chromatography-electrospray ionization-tandem mass spectrometry (HPLC-ESI-MS/MS) has been developed and validated. The method involved liquid-liquid extraction from plasma, simple chromatographic conditions on a Venusil XBP-PH C(18) column with the mobile phase of 0.5% formic acid in methanol, and mass spectrometric detection using an API-3000 instrument. Multiple reaction monitoring (MRM) mode was used to monitor precursor/product ion transitions of m/z 397.1/285.0 for CXB and m/z 381.6/269.2 for the internal standard (I.S.) cudraxanthone H. The standard curves were linear over the concentration range of 1-500 ng/mL for CXB in rat plasma. The intra- and inter-batch accuracy for CXB at four concentrations was 89.4-99.5% and 89.4-100.8%, respectively. The RSDs were less than 7.92%. The lower limit of quantification for CXB was 1.0 ng/mL using 100 microL of plasma. The average extraction recoveries of CXB ranged from 80.1 to 95.4% at the concentrations of 2, 50 and 500 ng/mL, respectively. This method was successfully applied to the pharmacokinetic study after an intravenous administration of CXB in male Sprague-Dawley (SD) rats.
authors.affiliation: Department of Pharmacognosy, School of Pharmacy, Fudan University, Shanghai 201203, PR China.
authors.forename: En-Hao
authors.initials: EH
authors.lastname: Pi
authors.forename: Jun
authors.initials: J
authors.lastname: Chen
authors.forename: Jian-Ming
authors.initials: JM
authors.lastname: Huang
authors.forename: Ai-Jun
authors.initials: AJ
authors.lastname: Hou
mesh_terms: D000818:Animals; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D008297:Male; D029586:Moraceae / Q000737:chemistry; D010936:Plant Extracts / Q000032:analysis* / Q000097:blood / Q000493:pharmacokinetics*; D051381:Rats; D017207:Rats, Sprague-Dawley; D053719:Tandem Mass Spectrometry / Q000379:methods*; D044004:Xanthones / Q000032:analysis* / Q000097:blood / Q000493:pharmacokinetics*
chemical_list: D010936:Plant Extracts; D044004:Xanthones; C552180:cudratricusxanthone B