发明人何建平,马晓峰,高志强. "Method for the Synthesis of 1,5-Diethyl (2E,4E)-4-{amino[4-(4-chlorophenyl)piperazin-1-yl]methylidene}-2-cyanopent-2-enedioate" [P]. 中国发明专利, 专利号 CN 111722644 B, 授权公告日 2019-02-28.
发明人胡光,陈志强,张德明. "A Process for Preparing High-Purity 1,5-Diethyl (2E,4E)-4-{amino[4-(4-chlorophenyl)piperazin-1-yl]methylidene}-2-cyanopent-2-enedioate" [P]. 中国发明专利, 专利号 CN 112222785 B, 授权公告日 2021-02-18.
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