Resolution by Preferential Crystallization of Proxyphylline by Using Its Salicylic Acid Monohydrate Co‐Crystal
Lina C. Harfouche, Clément Brandel, Yohann Cartigny, Samuel Petit, Gérard Coquerel
Abstract
Abstract The monohydrated co‐crystal composed of the chiral active pharmaceutical ingredient proxyphylline, salicylic acid, and water was successfully resolved by preferential crystallization from a water/ethanol mixture. To the best of our knowledge, this is the first report of preferential crystallization applied to such a system and the results reveal that unusually high enantiomeric excess values can be attained in the mother liquor. These robust and reproducible results underline the potential of preferential crystallization to resolve co‐crystal systems.
Topics & Concepts
CrystallizationSalicylic acidCrystal (programming language)Mother liquorChemistryCrystal growthActive ingredientEnantiomerChemical engineeringCrystallographyResolution (logic)Chiral resolutionOrganic chemistryBioinformaticsBiochemistryComputer scienceArtificial intelligenceProgramming languageEngineeringBiologyCrystallography and molecular interactionsCrystallization and Solubility StudiesAnalytical Chemistry and Chromatography