发明人何建平,冯建国,刘建华. "Method for the Synthesis of N-carbamimidoyl-4-ethylpiperazine-1-carboximidamide" [P]. 中国发明专利, 专利号 CN 113487923 A, 授权公告日 2020-03-16.
发明人徐明华,陈志强,何建平. "A Process for Preparing High-Purity N-carbamimidoyl-4-ethylpiperazine-1-carboximidamide" [P]. 中国发明专利, 专利号 CN 112177813 A, 授权公告日 2022-05-27.
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