Table 3.
Solvent Layer | Mitragynine Content (µg/mL) at Different Buffer pH | |||
---|---|---|---|---|
pH 4 ** | pH 7 ** | pH 9 ** | Water * | |
Octanol | 17.97 | 20.54 | 18.45 | 20.74 |
Buffer | 2.98 | 0.38 | 0.51 | 0.42 |
Calculated n-octanol/water partition coefficient | 0.78 | 1.73 | 1.56 | 1.70 |
Note: *: logP; **: logD.