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. 2013 Feb 26;15(2):589–597. doi: 10.1208/s12248-013-9462-x

Table II.

Pseudoephedrine and Metoprolol Physicochemical Properties Used for the Fraction Unionized (f u) and Fraction Extracted into Octanol (f e) Analyses

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Log P values were experimentally determined in this study; data presented as mean ± SD; n = 3. The pK a values were taken from the literature, for both metoprolol (31) and pseudoephedrine (32)