发明人何建平,徐明华,林芳. "Method for the Synthesis of Cephalexin Impurity 7 (Mixture Of Isomers)" [P]. 中国发明专利, 专利号 CN 111711639 B, 授权公告日 2025-07-01.
发明人唐晓军,陈志强,赵玉洁. "A Process for Preparing High-Purity Cephalexin Impurity 7 (Mixture Of Isomers)" [P]. 中国发明专利, 专利号 CN 117499939 B, 授权公告日 2025-11-26.
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