| http://www.w3.org/ns/prov#value | - By reaction of a basic compound of general formula I with a non-toxic inorganic or organic acid in a suitable solvent, which may be, for example, an alcohol, such as methanol, ethanol or any of the propanols or butanols, an ester, such as ethyl acetate, or a nitrile, such as acetonitrile, and following the customary techniques of precipitation, crystallisation, etc., the corresponding salt is obta
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