A high-performance liquid chromatographic method for the determination of DRF-2189, using troglitazone as internal standard, is described. A dichloromethane-ethyl acetate solvent mixture (6:4, v/v) was used as the extraction solvent. A Kromasil C18 column with a mobile phase consisting of 0.05 M phosphate buffer-acetonitrile-methanol (22.5:37.5:40) (pH 5.0) was used at a flow-rate of 1.0 ml/min. The eluate was monitored by using fluorescence detection with excitation and emission wavelengths at 292 nm and 325 nm, respectively. Ratio of peak area of analyte to internal standard was used for quantification of plasma samples. Using this method, the absolute recovery of DRF-2189 from rat plasma was >95% and the limit of quantitation was 50 ng/ml. The intra-day relative standard deviation (R.S.D.) ranged from 1.74 to 7.24% at 1 microg/ml and 1.86 to 3.83% at 10 microg/ml. The inter-day R.S.D.s were 8.34 and 4.91% at 1 and 10 microg/ml, respectively. The method was applied to measure plasma concentrations of DRF-2189 in pharmacokinetic studies in Wistar rats.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/s0378-4347(97)00583-5 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Identification of novel serum lipid metabolism potential markers and metabolic pathways for oral cancer: a population-based study.
BMC Cancer
January 2025
Department of Epidemiology and Health Statistics, Fujian Provincial Key Laboratory of Environment Factors and Cancer, School of Public Health, Fujian Medical University, 1 Xueyuan Road, Fujian, 350108, China.
Objective: This study aims to identify potential lipid biomarkers and metabolic pathways associated with oral cancer (OC). Then to establish and evaluate disease classification models capable of distinguishing OC patients from healthy controls.
Methods: A total of 41 OC patients and 41 controls were recruited from a hospital in Southeast China to examine the serum lipidomics by Ultra-high Performance Liquid Chromatography Q Exactive Mass Spectrometry (UHPLC-QE-MS).
Analysis and Identification of Polyphenols in Fragaria, Rubus, and Ribes Species by Nontargeted UHPLC-PDA-MS Metabolite Profiling.
Methods Mol Biol
January 2025
Environmental and Biochemical Sciences, James Hutton Institute, Dundee, Scotland, UK.
Profiling of secondary metabolites within Fragaria sp. (strawberry), Rubus sp. (raspberries and blackberries), and Ribes sp.
View Article and Find Full Text PDFIdentification of Lignans.
Methods Mol Biol
January 2025
College of Pharmacy and Institute of Pharmaceutical Sciences and Technology, Hanyang University, Ansan, Gyeonggi-do, Republic of Korea.
Lignans have garnered significant interest in various fields of pharmaceuticals, nutrition, and pesticides due to their diverse biological activities. This chapter primarily focuses on the extraction and purification methods of lignans from Schisandra, followed by an extensive examination of qualitative and quantitative analytical techniques, including thin-layer chromatography (TLC) and high-performance liquid chromatography (HPLC). Additionally, methods for structural analysis using nuclear magnetic resonance (NMR) are briefly summarized.
View Article and Find Full Text PDFAnalysis of Salicylic and Phenolic Acids in the Plant by HPLC-Fluorescence Detector.
Methods Mol Biol
January 2025
Natural Products Laboratory, Institute of Biology Leiden, Leiden University, Leiden, The Netherlands.
Salicylic acid is a member of benzoic acid derivatives, a group of compounds which have a backbone of C6C1 consisting of one carboxyl group and one (or more) hydroxyl group(s) attached to the aromatic ring. Salicylic acid is a signaling compound in systemic acquired resistance (SAR). An increased level of salicylic acid is found in the plant after a fungi's attack, which further induces the accumulation of phytoalexins, low molecular weight defense compounds.
View Article and Find Full Text PDFIdentification of Flavonoids Using UV-Vis and MS Spectra.
Methods Mol Biol
January 2025
Plant Sciences, Institute of Biology, Leiden University, Leiden, The Netherlands.
Flavonoids are a group of specialized metabolites that are ubiquitously found within the plant kingdom. While they fulfill various important functions within the plant, they are also utilized by humans in a variety of different fields such as medicine, food science, and agriculture. Thus, to elucidate the chemical composition of any given plant extract, extraction and identification of flavonoids are of high interest.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!