发明人何建平,杨光,林芳. "Method for the Synthesis of Piperazine Impurity 45" [P]. 中国发明专利, 专利号 CN 110153902 A, 授权公告日 2023-09-23.
发明人王建平,冯建国,杨光. "A Process for Preparing High-Purity Piperazine Impurity 45" [P]. 中国发明专利, 专利号 CN 115787471 B, 授权公告日 2016-06-17.
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