| http://www.w3.org/ns/prov#value | - As a rule, the acid-addition salts are obtained in known manner by mixing the free base or a solution thereof with the appropriate acid or a solution thereof in an organic solvent, for example, a lower alcohol, such as methanol, ethanol, or propan-2-ol, or a lower ketone, such as acetone, or butan-2-one, or an ether, such as diethyl ether, diisopropyl ether, tetrahydrofuran, or dioxane.
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