title: Determination of bicyclol in dog plasma using liquid chromatography-tandem mass spectrometry.
abstract: A sensitive and accurate method for determination of bicyclol in dog plasma was developed. Thermo Scientific TSQ Quantum triple quadrupole system with multiple ion monitoring (MIM) positive scanning mode was applied. Bicyclol and DDB (IS) sodium adduct molecular ions were monitored at m/z 413 and m/z 441 in both Q1 and Q3, respectively. The collision energy in Q2 was set to 15 eV. Precipitation method was employed in the extraction of bicyclol and DDB from the biological matrix. The method was validated over 1-500 ng/mL for bicyclol. The recovery was 96.5-109.5%, and the limit of quantitation (LOQ) detection was 1 ng/mL for bicyclol. The intra- and inter-day precision of the method at three concentrations was 3.3-14.3% with accuracy of 99.9-109.0%. The method was successfully applied to bioequivalence studies of bicyclol controlled-release formulation to obtain the pharmacokinetic parameters.
authors.affiliation: Institute of Materia Medica, Chinese Academy of Medical Sciences & Perking Union Medical College, No. 1 Xian Nong Tan Street, Beijing 100050, PR China.
authors.forename: Li
authors.initials: L
authors.lastname: Sheng
authors.forename: Jinping
authors.initials: J
authors.lastname: Hu
authors.forename: Baolian
authors.initials: B
authors.lastname: Wang
authors.forename: Hui
authors.initials: H
authors.lastname: Chen
authors.forename: Yan
authors.initials: Y
authors.lastname: Li
mesh_terms: D000284:Administration, Oral; D000818:Animals; D001713:Biphenyl Compounds / Q000008:administration & dosage / Q000097:blood* / Q000737:chemistry / Q000493:pharmacokinetics; D002853:Chromatography, Liquid; D003692:Delayed-Action Preparations; D004285:Dogs; D004355:Drug Stability; D005260:Female; D008297:Male; D015203:Reproducibility of Results; D013607:Tablets; D053719:Tandem Mass Spectrometry / Q000379:methods*; D013810:Therapeutic Equivalency; D013997:Time Factors
chemical_list: D001713:Biphenyl Compounds; D003692:Delayed-Action Preparations; D013607:Tablets; C477843:bicyclol