Hadi Foroughi, E. Rahimpour, M. Kouhkan, Anahita Fathi Azarbayjani, A. Jouyban
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Solubility enhancement of atorvastatin calcium and ethanol-mediated transition with some surfactants
ABSTRACT Atorvastatin calcium (ATC) is a class II BCS blockbuster synthetic cholesterol-lowering drug. The aim of this work is to examine the solubility of ATC in ethanol and water mixtures at room temperature and to study the effect of various concentrations of Tween 80 and benzalkonium chloride (BAC) on drug solubility in aqueous mixtures of ethanol. ATC shows maximum solubility in ethanol + water mixtures at a ratio of w1 = 0.7 ethanol. The addition of a surfactant changed the drug solubility profile relative to the surfactant type and its concentration. XRD and DSC results indicate that a high concentration of BAC may induce the formation of ATC solvate which influenced the melting point and solubility of the drug. Surfactant type and concentration influence the morphology, nucleation, and growth of drug crystals. A high concentration of BAC accelerates crystal habits and its relative growth rate while Tween 80 slows its growth rate.
期刊介绍：
Physics and Chemistry of Liquids publishes experimental and theoretical papers, letters and reviews aimed at furthering the understanding of the liquid state. The coverage embraces the whole spectrum of liquids, from simple monatomic liquids and their mixtures, through charged liquids (e.g. ionic melts, liquid metals and their alloys, ions in aqueous solution, and metal-electrolyte systems) to molecular liquids of all kinds. It also covers quantum fluids and superfluids, such as Fermi and non-Fermi liquids, superconductors, Bose-Einstein condensates, correlated electron or spin assemblies.
By publishing papers on physical aspects of the liquid state as well as those with a mainly chemical focus, Physics and Chemistry of Liquids provides a medium for the publication of interdisciplinary papers on liquids serving its broad international readership of physicists and chemists.
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