title: Determination of SNX-2112, a selective Hsp90 inhibitor, in plasma samples by high-performance liquid chromatography and its application to pharmacokinetics in rats.
abstract: A sensitive and specific reversed-phase high-performance liquid chromatography method with ultraviolet detection has been developed and validated for the identification and quantification of SNX-2112 in rat plasma. Following sample preparation using liquid-liquid extraction, the analytes were separated by the mobile phase acetonitrile-water (40:60, v/v) with an Agilent RP-HPLC column (ZORBAX SB-C18, 5 microm, 4.6 mm x 250 mm) at a flow rate of 1 ml/min, column temperature of 30 degrees C and detection wavelength of 251 nm. The retention time of SNX-2112 was 11.2 min. A good linear relationship was obtained in the concentration range studied (0.07-21 microg/ml, R(2)>0.9982), and the LLOD and LLOQ for SNX-2112 were 0.02 and 0.07 microg/ml, respectively. The mean absolute recovery of SNX-2112 in plasma ranged from 88.58 to 99.61% at the studied concentrations. The intra- and inter-batch relative standard deviations were 1.7-3.5 and 1.9-4.4%, respectively. This method was successfully applied to pharmacokinetic studies in rats after intravenous administration of SNX-2112.
authors.affiliation: Guangzhou Jinan Biomedicine Research and Development Center, National Engineering Research Center of Genetic Medicine, Jinan University, No. 601 HuangPu Road, Guangzhou, China.
authors.forename: Qian-Qian
authors.initials: QQ
authors.lastname: Zhai
authors.forename: Guo-Qin
authors.initials: GQ
authors.lastname: Gong
authors.forename: Yong
authors.initials: Y
authors.lastname: Luo
authors.forename: Qing-Duan
authors.initials: QD
authors.lastname: Wang
authors.forename: Min
authors.initials: M
authors.lastname: Xia
authors.forename: Guo-Wen
authors.initials: GW
authors.lastname: Xing
authors.forename: Yi-Cheng
authors.initials: YC
authors.lastname: Li
authors.forename: Jin-Hua
authors.initials: JH
authors.lastname: Jiang
authors.forename: Zhong
authors.initials: Z
authors.lastname: Liu
authors.forename: Qiu-Ying
authors.initials: QY
authors.lastname: Liu
authors.forename: Yi-Fei
authors.initials: YF
authors.lastname: Wang
mesh_terms: D000818:Animals; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D004355:Drug Stability; D018841:HSP90 Heat-Shock Proteins / Q000037:antagonists & inhibitors*; D006576:Heterocyclic Compounds, 4 or More Rings / Q000097:blood* / Q000737:chemistry / Q000493:pharmacokinetics; D008297:Male; D051381:Rats; D017207:Rats, Sprague-Dawley
chemical_list: D018841:HSP90 Heat-Shock Proteins; D006576:Heterocyclic Compounds, 4 or More Rings; C534922:SNX 2112