Björnsson E, Nielsen H, Sørensen M. "Method for the Synthesis of 3-[(2-Benzoyl-3-oxo-3-phenylprop-1-en-1-yl)amino]-2H,5H-pyrano[3,2-c]chromene-2,5-dione" [P]. European Patent, EP 3577971 A1, 2024-05-13.
发明人林芳,陈志强,赵玉洁. "A Process for Preparing High-Purity 3-[(2-Benzoyl-3-oxo-3-phenylprop-1-en-1-yl)amino]-2H,5H-pyrano[3,2-c]chromene-2,5-dione" [P]. 中国发明专利, 专利号 CN 109011603 B, 授权公告日 2015-04-13.
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