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Exploring better column selectivity choices in ultra-high performance liquid chromatography using quality by design
Róbert Kormány1, Imre Molnár, Hans-Jürgen Rieger
1Egis Plc., Budapest, Hungary.
Journal of Pharmaceutical and Biomedical Analysis
|March 27, 2013
Summary
Researchers optimized amlodipine analysis using ultra-high-performance liquid chromatography (UHPLC), reducing run times from 60 minutes to under 6 minutes. This method ensures robust separation and accurate results, significantly improving efficiency in pharmaceutical analysis.
Area of Science:
- Analytical Chemistry
- Pharmaceutical Analysis
- Chromatography
Background:
- Traditional amlodipine analysis methods are time-consuming, often exceeding 60 minutes per run.
- Optimizing chromatographic conditions is crucial for efficient and robust pharmaceutical quality control.
- Ultra-high-performance liquid chromatography (UHPLC) offers potential for significantly reduced analysis times.
Purpose of the Study:
- To develop a rapid and robust UHPLC method for amlodipine analysis.
- To reduce the amlodipine analysis time from 60 minutes to below 6 minutes.
- To identify optimal UHPLC column chemistries and operating conditions for improved separation.
Main Methods:
- Investigated 9 different UHPLC column chemistries.
- Utilized 3-dimensional resolution spaces and modeling software to optimize parameters: gradient time (tG), temperature (T), and eluent A pH.
- Performed 108 experimental runs (9 columns x 12 experiments) on a UHPLC instrument, completing the work in under 24 hours.
Main Results:
- Achieved amlodipine analysis times below 6 minutes for all investigated columns.
- Demonstrated excellent correlation between predicted and experimental results (differences < 0.04 min).
- Confirmed satisfactory baseline separation at optimized, individual working points for each column.
Conclusions:
- The developed UHPLC method significantly reduces amlodipine analysis time while maintaining robustness and accuracy.
- 3D resolution space modeling is an effective strategy for rapid optimization of UHPLC methods.
- This approach enhances efficiency in pharmaceutical analysis and quality control.
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