| http://www.w3.org/ns/prov#value | - The active compounds of Formulae I-IV can be administered by themselves or in the form of their pharmaceutically acceptable salts, e.g., an alkali metal salt such as lithium, sodium or potassium, an alkaline earth metal salts such as manganese, magnesium and calcium or an ammonium and tetraalkyl ammonium salts, NX4 + (wherein X is C1-4 alkyl group).
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