Date Approved
8-6-2020
Embargo Period
8-6-2022
Document Type
Thesis
Degree Name
M.S. Pharmaceutical Sciences
Department
Chemistry and Biochemistry
College
College of Science & Mathematics
Advisor
Grinias, James P.
Committee Member 1
Mugweru, Amos
Committee Member 2
Jonnalaggadda, Subash
Keywords
high-throughput, method development, monograph, pharmaceuticals, superficially porous particles, ultrahigh pressure liquid chromatography
Subject(s)
Drug development; Liquid chromatography
Disciplines
Medicinal Chemistry and Pharmaceutics
Abstract
The higher pressures and flow rates needed to increase throughput in ultra-high pressure liquid chromatography (UHPLC) can lead to thermal broadening due to viscous friction. The use of superficially porous particles and still-air thermal environments can help reduce this broadening, which is especially important in applications requiring high-throughput, isocratic separations, such as monograph methods for over-the-counter analgesics. In the first experiment discussed below, system suitability parameters (resolution and peak asymmetry) and temperature changes across the axial length of the column were monitored at conditions near column or system pressure limits. Results from this investigation indicated that shorter columns packed with 2.6 µm particles provide the best opportunity for increased throughput, which was demonstrated with a 20 s cycle time method for the separation of four compounds while maintaining a baseline resolution of 1.5 between all peaks. This was the basis for the idea of creating a method qualification protocol of an adapted ibuprofen method. Linearity, accuracy, recovery and repeatability measurements were completed in 16 minutes using this approach, a sequence that often requires a full day of analysis. These results demonstrate the capability of modern instrumentation to readily implement high-throughput LC methods into qualified pharmaceutical workflows.
Recommended Citation
Kresge, Glenn Anthony, "The use of ultra-high pressure liquid chromatography in high-throughput pharmaceutical separations" (2020). Theses and Dissertations. 2830.
https://rdw.rowan.edu/etd/2830