Date: July 31, 2009
Creator: Jouyban, Abolghasem; Shokri, Javad; Barzegar-Jalali, Mohammad; Hassanzadeh, Davoud; Acree, William E. (William Eugene); Ghafourian, Taravat et al.
Description: This article discusses solubility. Abstract: Experimental solubilities of 7-chloro-2-methylamino-5-phenyl-3H-1,4-benzodiazepine-4-oxide (chlordiazepoxide), 7-chloro-1,3-dihydro-1-methyl-5-phenyl-2H-1,4-benzodiazepin-2-one (diazepam), and 7-chloro-5-(2-chlorophenyl)-3-hydroxy-1,3-dihydro-1,4-benzodiazepin-2-one (lorazepam) in (propane-1,2-diol + water) at T = 303.2 K were reported. The solubility of drugs increased with the addition of propane-1,2-diol and reached the maximum values in pure propane-1,2-diol. The Jouyban−Acree model was used to fit the experimental data, and the solubilities were reproduced using a previously trained version of the Jouyban−Acree model and the solubility data in monosolvents in which the overall mean relative deviations (OMRDs) of the back-calculated and predicted values with the corresponding experimental data were 4.2% and 10.7%. The solubilities of the three drugs were also predicted using a trained version of the log−linear model of Yalkowsky, and the OMRD was 21.1%.
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