Abstract
In this work we investigated the solubilities of 10 active pharmaceutical ingredients (APIs), namely, fenofibrate, ibuprofen, cinnarizine, carbamazepine, indomethacin, naproxen, griseofulvin, glibenclamide, felodipine, and praziquantel in the pharmaceutically relevant excipients tricaprylin, Lauroglycol FCC, Capryol 90, Kolliphor TPGS, ethanol, and monolaurin. API solubilities were either determined gravimetrically, with high-performance liquid chromatography, or with differential scanning calorimetry. Mutual solubilities in the three possible mixtures out of Kolliphor TPGS, tricaprylin, and carbitol as well as the vapor sorption of ethanol in tricaprylin were determined experimentally. The Perturbed-Chain Statistical Associating Fluid Theory (PC-SAFT) pure-component parameters for seven APIs were determined via fitting to vapor pressures and liquid densities or to solubilities in organic solvents. In total, 80 binary interaction parameters were fitted to the investigated binary mixtures. They can be used in the future to improve the accuracy of lipid-based drug delivery systems in-silico screenings with PC-SAFT.
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