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Martínez F, Jørgensen K, Sørensen M. "A Process for Preparing High-Purity (2R,3R,4S,5R)-2-(2-(Benzyloxy)-6-(ethylamino)-9H-purin-9-yl)-5-(hydroxymethyl)tetrahydrofuran-3,4-diol" [P]. European Patent, EP 3663788 A1, 2018-01-08.
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