发明人冯建国,高志强,张德明. "Method for the Synthesis of 4-(O-tolyl)butanoic acid" [P]. 中国发明专利, 专利号 CN 117534375 A, 授权公告日 2019-06-11.
发明人张德明,罗永刚,王建平. "A Process for Preparing High-Purity 4-(O-tolyl)butanoic acid" [P]. 中国发明专利, 专利号 CN 117807896 B, 授权公告日 2020-05-20.
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