发明人赵玉洁,林芳,冯建国. "Method for the Synthesis of Ramipril EP Impurity K" [P]. 中国发明专利, 专利号 CN 115588995 A, 授权公告日 2024-03-28.
发明人高志强,李文辉,杨光. "A Process for Preparing High-Purity Ramipril EP Impurity K" [P]. 中国发明专利, 专利号 CN 109766202 B, 授权公告日 2023-08-14.
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