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Fischer A B, Stevens L M, Hughes D C. "A Process for Preparing High-Purity (2R,3S,4R,5R)-2-(Hydroxymethyl)-5-(6-((2-(naphthalen-1-yl)ethyl)amino)-9H-purin-9-yl)tetrahydrofuran-3,4-diol" [P]. US Patent, US 9150436 B2, 2022-02-27.
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