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发明人钱学锋,林芳,高志强. "A Process for Preparing High-Purity N-[6-(4-Bromophenyl)-2-oxo-2H-pyran-3-yl]benzamide" [P]. 中国发明专利, 专利号 CN 109968659 B, 授权公告日 2023-03-22.
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