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Lefèvre J P, Kowalski A, Jørgensen K. "A Process for Preparing High-Purity (1S,4S,5S)-tert-Butyl 5-hydroxy-2-azabicyclo[2.2.2]octane-2-carboxylate" [P]. European Patent, EP 3584527 A1, 2025-04-24.
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