title: Liquid chromatography/tandem mass spectrometry assay for the quantification of troxerutin in human plasma.
abstract: A simple, rapid, sensitive and specific liquid chromatography/tandem mass spectrometry method was developed and validated to quantify troxerutin in human plasma. The analyte and rutin, used as the internal standard, were analyzed on a Phenomenex Synergi Fusion RP column interfaced with a triple-quadrupole tandem mass spectrometer using positive electrospray ionization. Acetonitrile/water (20:80 v/v) was used as the isocratic mobile phase, with 0.1% formic acid in water. A simple sample preparation method of protein precipitation with perchloric acid was employed. The assay was linear over the concentration range 31.25-4000 pg/mL. Correlation coefficients generated by linear regression with a 1/x(2) weighting factor ranged from 0.9991 to 0.9996. The intra- and inter-day precision over the entire concentration range were less than 12.28%. The method was successfully applied to a pharmacokinetic study after oral administration of a 300 mg troxerutin drop pill to 18 healthy volunteers.
authors.affiliation: Department of Chemistry, University of Science and Technology of China, Hefei 230026, China.
authors.forename: Fei
authors.initials: F
authors.lastname: Liu
authors.forename: Yu
authors.initials: Y
authors.lastname: Xu
authors.forename: Lei
authors.initials: L
authors.lastname: Rui
authors.forename: Shu
authors.initials: S
authors.lastname: Gao
authors.forename: Haijun
authors.initials: H
authors.lastname: Dong
authors.forename: Qingxiang
authors.initials: Q
authors.lastname: Guo
mesh_terms: D000328:Adult; D001774:Blood Chemical Analysis / Q000379:methods*; D002853:Chromatography, Liquid / Q000379:methods*; D006801:Humans; D006896:Hydroxyethylrutoside / Q000031:analogs & derivatives* / Q000097:blood / Q000493:pharmacokinetics; D008297:Male; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D021241:Spectrometry, Mass, Electrospray Ionization / Q000379:methods*; D013810:Therapeutic Equivalency
chemical_list: D006896:Hydroxyethylrutoside; C005865:troxerutin