发明人王建平,徐明华,朱建伟. "一种苹果酸杂质3的合成方法" [P]. 中国发明专利, 专利号 CN 112903505 A, 授权公告日 2015-07-14.
发明人何建平,周伟,陈志强. "Method for the Synthesis of Malic Acid Impurity 3" [P]. 中国发明专利, 专利号 CN 108103562 A, 授权公告日 2025-12-09.
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