title: Analysis of ciprofloxacin by a simple high-performance liquid chromatography method.
abstract: A simple and sensitive high-performance liquid chromatographic method is described for the quantitative analysis of ciprofloxacin in pharmaceuticals and human plasma. The method employs reversed-phase chromatography using an RP-C18 column with an isocratic mobile phase of acetonitrile-2% acetic acid aqueous solution (16:84, v/v), umbelliferone as an internal standard, and a flow rate of 1.0 mL/min. The UV detector is set at 280 nm. The limit of detection is 0.25 microM (S/N = 3, injection volume = 10 microL). The regression equations are linear (r > 0.9999) over a range between 0.51 approximately 130 microM for the pharmaceutical analysis of ciprofloxacin and 0.51 approximately 64.8 microM for the biological analysis of ciprofloxacin in human plasma. The intra- and inter-day relative standard deviation and relative error are less than 3.39% and 5.71%, respectively. All the recoveries are greater than 93.8%. This method is successfully applied in a pharmacokinetic study of a volunteer who receives a 500 mg ciprofloxacin tablet.
authors.affiliation: Pharmacy School, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, Taiwan.
authors.forename: Shihn-Sheng
authors.initials: SS
authors.lastname: Wu
authors.forename: Chih-Yuan
authors.initials: CY
authors.lastname: Chein
authors.forename: Yen-Hsia
authors.initials: YH
authors.lastname: Wen
mesh_terms: D000900:Anti-Bacterial Agents / Q000032:analysis* / Q000097:blood / Q000493:pharmacokinetics; D002939:Ciprofloxacin / Q000032:analysis* / Q000097:blood / Q000493:pharmacokinetics; D006801:Humans; D004364:Pharmaceutical Preparations / Q000737:chemistry*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013056:Spectrophotometry, Ultraviolet
chemical_list: D000900:Anti-Bacterial Agents; D004364:Pharmaceutical Preparations; D002939:Ciprofloxacin