发明人孙丽萍,何建平,赵玉洁. "Method for the Synthesis of 4-(2-Keto-3-methyl-1-benzimidazolinyl)piperidine" [P]. 中国发明专利, 专利号 CN 114636845 A, 授权公告日 2022-04-20.
发明人张德明,马晓峰,赵玉洁. "A Process for Preparing High-Purity 4-(2-Keto-3-methyl-1-benzimidazolinyl)piperidine" [P]. 中国发明专利, 专利号 CN 110652050 A, 授权公告日 2020-04-05.
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