Bulletin of the Korean Chemical Society

Korean Chemical Society (대한화학회)
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LC-MS/MS Assay Validation for a New Immune Modulator, JHL45, and its Major Metabolite in Plasma: Application to Pharmacokinetic Studies in Rats

  • Published : 2009.11.20
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Abstract

JHL45, a novel immune modulator for anti-atopic dermatitis and allergic airway disease, was synthesized from decursin isolated from Angelica gigas. In order to conduct a pharmacokinetic study of JHL45, an analytical method, ideally one that uses a minimal amount of biological sample must first be validated. In this study, a HPLC-MS/MS method was developed and validated for the quantification of JHL45 and its major metabolite, (+)-decursinol, from 10 ${\mu}L$ of rat plasma. JHL45 was stable under the analysis conditions, and intra- and inter-day accuracies exceeded 90.06%, with a precision variability ${\leq}$ 13.16% for each analyte. The mean values for Cmax, AUC8h, half-life of JHL45 in rats after intravenous administration of 5 mg/kg JHL45 were 24.59 μg/mL, 10.02 ${\mu}g{\cdot}h/mL$, and 1.88 h, respectively. The validated method herein will be useful for further pharmacokinetic studies of JHL45, as well as in preclinical and clinical phases.

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