title: Simple determination of pirfenidone in rat plasma via high-performance liquid chromatography.
abstract: A simple, rapid and reliable high-performance liquid chromatographic method was developed and validated for the determination of pirfenidone and its major metabolites in rat plasma. Plasma proteins were precipitated with perchloric acid (10%, v/v) and the supernatant after centrifugation was determined using high-performance liquid chromatography. The analysis was carried out on a Lichrospher C(18) column (250 x 4.6 mm i.d., 5 microm). The mobile phase consisted of acetonitrile-water containing 0.2% acetic acid (23:77, v/v) at a flow-rate of 1 mL/min. The eluant was detected at 310 nm. The calibration curves were linear over a concentration range from 0.15 to 76.67 microg/mL. The accuracy (relative error) of the assay ranged from -2.6 to 7.9% and the precision (coefficient of variation) was less than 4.5%. The established method has been successfully applied to a pharmacokinetic study of pirfenidone following a single oral dose to rats.
authors.affiliation: Key Laboratory of Drug Metabolism and Pharmacokinetics, China Pharmaceutical University, Nanjing 210009, People's Republic of China.
authors.forename: Yongsheng
authors.initials: Y
authors.lastname: Wang
authors.forename: Xiaoping
authors.initials: X
authors.lastname: Zhao
authors.forename: Jiao
authors.initials: J
authors.lastname: Zhong
authors.forename: Yan
authors.initials: Y
authors.lastname: Chen
authors.forename: Xiaoquan
authors.initials: X
authors.lastname: Liu
authors.forename: Guangji
authors.initials: G
authors.lastname: Wang
mesh_terms: D000818:Animals; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D004355:Drug Stability; D011728:Pyridones / Q000097:blood* / Q000493:pharmacokinetics; D051381:Rats; D017207:Rats, Sprague-Dawley; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity
chemical_list: D011728:Pyridones; C093844:pirfenidone