发明人何建平,李文辉,林芳. "一种利多卡因EP杂质K(盐酸盐)的合成方法" [P]. 中国发明专利, 专利号 CN 109950277 A, 授权公告日 2023-05-08.
Williams B T, Hughes D C, Lee S K. "Method for the Synthesis of Lidocaine Hydrochloride EP Impurity K " [P]. US Patent, US 9059520 B2, 2020-03-24.
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