| http://www.w3.org/ns/prov#value | - The O-acyl radicals of the dihydroresorufin moiety are split off especially advantageously by reaction with 2 to 10 mole and preferably with 2 to 4 mole of sodium sulphite in a mixture of water and a water-soluble solvent, for example 1,4-dioxan, methanol or ethanol and preferably water/1,4-dioxan (1:1 v/v).
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