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发明人马晓峰,郑宇鹏,胡光. "A Process for Preparing High-Purity (2-Acetyl-4-methyl-3-oxo-1-phenylpyrazolidin-4-yl)methyl acetate" [P]. 中国发明专利, 专利号 CN 115422972 A, 授权公告日 2019-08-11.
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