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Development and scale-up experiments are performed in a 100ml and 1L scale automated laboratory reactors. These laboratory reactor platforms, used in conjunction with PAT technologies, are used to develop and optimize the crystallization of both an Active Pharmaceutical Ingredient (API) and benzoic acid. The use of this methodology for assessing and solving laboratory based tech transfers and scale-up issues is also demonstrated.
The use of a commercially available software package is shown to implement an open loop feedback control strategy, used in conjunction with ATR-FTIR peak height values. The presented strategy demonstrates how qualitative supersaturation trajectories can be controlled to a specific set point and in turn ensure particle dimension and quality are not jeopardized in the tech transfer and scale-up of these processes.
The knowledge gained when coupled with in situ particle dimension information significantly increase process understanding and as a result minimal experimentation is required to output a desirable crystallization process.
Mark Barrett received his Ph.D. from University College Dublin (UCD) in Ireland, where he also studied Chemical Engineering. His thesis work focused on crystallization development and scale-up. Previously, Mark worked for Schering-Plough as a Process Development Engineer. Mark is now a Senior Research and Development Engineer at the Solid State Pharmaceutical Cluster (SSPC), based in Ireland.