Table 2. Solubility of anhydrous theophylline in various solvents .
| Solvent solubility (mg/ml) | solubility (mg/ml) |
| Dichloromethane | 0.91 |
| Isopropyl alcohol | 1.04 |
| Acetonitrile | 0.784 |
| Ethanol | 15.19 |
| Methanol | 0.699 |
| Acetone | 3.142 |
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