title: Determination of a new carbapenem derivative, DA-1131, in plasma and urine by high-performance liquid chromatography.
abstract: A high-performance liquid chromatographic method was developed for the determination of a new carbapenem, DA-1131 (I), in human plasma and urine and in rat blood and tissue homogenates. The method involved deproteinization of the biological samples with 1 volume each of 0.04 M Ba(OH)2 and ZnSO4 aqueous solution. A 50-microliters aliquot of the supernatant was injected onto a C18 reversed-phase column. The mobile phase employed was 0.015 M KH2PO4-acetonitrile (9:1, v/v) with a pH of 5.0. The flow-rate was 0.8 ml/min. The column effluent was monitored by a ultraviolet detector at 300 nm. The retention time of I was 8.0 min. The detection limits of I in human plasma and urine were 0.1 and 0.5 micrograms/ml, respectively. The coefficients of variation of the assay were generally low (below 8.39%) for human plasma and urine, and rat blood and tissue homogenates. No interferences from endogenous substances were observed.
authors.affiliation: College of Pharmacy, Seoul National University, South Korea.
authors.forename: S H
authors.initials: SH
authors.lastname: Kim
authors.forename: J W
authors.initials: JW
authors.lastname: Kwon
authors.forename: J
authors.initials: J
authors.lastname: Yang
authors.forename: M G
authors.initials: MG
authors.lastname: Lee
mesh_terms: D000818:Animals; D015780:Carbapenems / Q000008:administration & dosage / Q000032:analysis* / Q000737:chemistry / Q000493:pharmacokinetics*; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D006801:Humans; D007275:Injections, Intravenous; D009994:Osmolar Concentration; D051381:Rats; D017207:Rats, Sprague-Dawley; D015203:Reproducibility of Results; D013056:Spectrophotometry, Ultraviolet; D014018:Tissue Distribution
chemical_list: D015780:Carbapenems; C099230:DA 1131