发明人张德明,钱学锋,冯建国. "Method for the Synthesis of Probenecid Impurity 4" [P]. 中国发明专利, 专利号 CN 110088620 A, 授权公告日 2023-02-04.
发明人马晓峰,高志强,王建平. "A Process for Preparing High-Purity Probenecid Impurity 4" [P]. 中国发明专利, 专利号 CN 109626021 B, 授权公告日 2016-02-01.
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