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Determination of clavulanic acid by a sensitive HPLC method
A S Low1, R B Taylor, I M Gould
1Robert Gordon's Institute of Technology, City Hospital, Aberdeen, UK.
The Journal of Antimicrobial Chemotherapy
|November 1, 1989
Summary
A novel HPLC method enhances clavulanic acid detection sensitivity by tenfold. This breakthrough aids crucial research into clavulanic acid
Area of Science:
- Analytical Chemistry
- Pharmacokinetics
Background:
- Clavulanic acid is a vital beta-lactamase inhibitor.
- Accurate quantification is essential for pharmacokinetic studies.
- Existing analytical methods lack sufficient sensitivity.
Purpose of the Study:
- To develop a highly sensitive HPLC method for clavulanic acid estimation.
- To improve upon existing detection limits for body tissue and fluid analysis.
Main Methods:
- Utilized High-Performance Liquid Chromatography (HPLC) with UV detection.
- Employed solid-phase extraction with imidazole derivatization for sample preparation.
- Incorporated pre-concentration and a microbore chromatographic column.
Main Results:
- Achieved a tenfold increase in sensitivity compared to previous methods.
- Detection limit established at less than 0.008 mg/l.
- Method is compatible with standard HPLC equipment.
Conclusions:
- The new HPLC method offers superior sensitivity for clavulanic acid analysis.
- This advancement facilitates more detailed investigations into clavulanic acid's tissue and fluid penetration.
- The method provides a valuable tool for pharmacokinetic and drug metabolism research.