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Pharmaceutical profiling method for lipophilicity and integrity using liquid chromatography-mass spectrometry
Edward H Kerns1, Li Di, Susan Petusky
1Wyeth Research, Chemical Sciences, Discovery Analytical Chemistry, CN8000, Princeton, NJ 08543-8000, USA. kernse@wyeth.com
Summary
This study presents a rapid method for simultaneously assessing drug lipophilicity, integrity, and purity. This high-throughput profiling technique aids early-stage pharmaceutical discovery and development.
Area of Science:
- Analytical Chemistry
- Pharmaceutical Sciences
- Drug Discovery
Background:
- Accurate profiling of lipophilicity, integrity, and purity is crucial in pharmaceutical research.
- Existing methods can be time-consuming, limiting high-throughput applications.
- Need for rapid, simultaneous assessment of multiple drug properties.
Purpose of the Study:
- To develop a rapid, simultaneous method for profiling sample lipophilicity, integrity, and purity.
- To enable high-throughput pharmaceutical property assessment in drug discovery.
- To validate the method's accuracy and applicability to diverse drug compounds.
Main Methods:
- Utilized a short Polaris C(18) column with a wide-polarity mobile phase gradient.
- Employed UV detection and Mass Spectrometry (MS) analysis.
- Estimated lipophilicity via a calibration curve correlating retention time with LogD(7.4).
Main Results:
- Achieved simultaneous profiling of lipophilicity, integrity, and purity.
- Demonstrated high-throughput capability for pharmaceutical property assessment.
- Established a strong correlation (r²=0.89) between literature LogD(7.4) and HPLC-measured LogD(7.4) for 60 diverse drugs.
Conclusions:
- The developed method offers a rapid and efficient approach for initial pharmaceutical profiling.
- Applicable to compounds with molecular weight > 200 and retention time > 1.5 min.
- Facilitates accelerated drug discovery by enabling quick assessment of key drug properties.