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Nowak P, Schröder R, Nielsen H. "A Process for Preparing High-Purity 5-Nitro-N'-[(1E)-[7-(prop-2-en-1-yloxy)naphthalen-1-yl]methylidene]-1-benzothiophene-2-carbohydrazide" [P]. European Patent, EP 3884747 A1, 2019-04-20.
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