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发明人郑宇鹏,胡光,韩伟. "A Process for Preparing High-Purity 2-(5-Oxo-4,5-dihydro-1h-pyrazol-3-yl)acetic acid" [P]. 中国发明专利, 专利号 CN 116607207 B, 授权公告日 2024-01-26.
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