Comparison of extraction techniques for spray dried dispersion tablet formulations

Non-traditional sample preparation/extraction techniques that utilized the Caliper Life Sciences Tablet Processing Workstation II (TPW II), Microwave Assisted Extraction (MAE), and Accelerated Solvent Extraction (ASE) were evaluated for the extraction of Compound A from a 50 mgA, 15% Spray Dried Dispersion (SDD) immediate released (IR) tablet formulation. The TPW II consistently provided complete recoveries with very short preparation/extraction times (∼30 min). MAE also provided complete recovery of the API from the tablet formulation, but required approximately twice the extraction time, while ASE provided the lowest recovery of the three non-traditional techniques. The sample preparation/extraction efficiencies of the three non-traditional techniques were compared to that of the 5.5 h long manual method.