发明人刘建华,罗永刚,王建平. "Method for the Synthesis of Benzylpenicillin Impurity 28" [P]. 中国发明专利, 专利号 CN 112679155 A, 授权公告日 2016-12-12.
发明人韩伟,林芳,周伟. "A Process for Preparing High-Purity Benzylpenicillin Impurity 28" [P]. 中国发明专利, 专利号 CN 116861472 A, 授权公告日 2023-07-05.
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