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Laser diffraction for standardization of heterogeneous pharmaceutical preparations
A V Syroeshkin1, P I Popov, T V Grebennikova
1Department of Pharmaceutical and Toxicological Chemistry, Faculty of Medicine, Peoples Friendship University of Russia, Moscow, Russia.
Summary
A new laser diffraction method offers quantitative standardization and quality control for heterogeneous pharmaceutical preparations. This technique addresses challenges like layering and precipitation during storage, ensuring medicine quality.
Area of Science:
- Pharmaceutical Sciences
- Analytical Chemistry
- Materials Science
Background:
- Heterogeneous pharmaceutical preparations, including suspensions and emulsions, pose challenges for quality control due to potential phase separation during storage.
- Layering (L1/L2) and precipitation (S/L) can alter the efficacy and safety of these complex drug formulations.
- Standardization methods must account for the dynamic nature of disperse phases in these medicines.
Purpose of the Study:
- To introduce a novel quantitative method for the standardization of heterogeneous pharmaceutical preparations.
- To establish a reliable approach for quality control of these medicines during their storage period.
- To demonstrate the applicability of laser diffraction for assessing changes in disperse phases.
Main Methods:
- Development of a quantitative standardization method utilizing laser diffraction technology.
- Application of the laser diffraction method to various heterogeneous pharmaceutical dosage forms (suspensions, emulsions, etc.).
- Evaluation of the method's efficacy in detecting physical changes like layering and precipitation over time.
Main Results:
- The proposed laser diffraction method provides accurate and quantitative measurements for heterogeneous pharmaceutical preparations.
- The technique successfully identified and quantified phase separation phenomena, such as layering and precipitation, during simulated storage.
- Demonstrated the method's suitability for routine quality control in pharmaceutical manufacturing and stability testing.
Conclusions:
- Laser diffraction offers a robust and efficient tool for the standardization and quality control of heterogeneous pharmaceutical preparations.
- This method enables effective monitoring of physical stability, ensuring consistent product quality throughout the shelf life.
- The proposed approach is valuable for pharmaceutical industries seeking to enhance the reliability of complex formulations.