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发明人张德明,陈志强,胡光. "Method for the Synthesis of Ethyl 1,2-diamino-4-(4-chlorophenyl)-5-cyano-6-oxo-1,6-dihydropyridine-3-carboxylate" [P]. 中国发明专利, 专利号 CN 111730560 B, 授权公告日 2022-01-02.
发明人李文辉,高志强,罗永刚. "A Process for Preparing High-Purity Ethyl 1,2-diamino-4-(4-chlorophenyl)-5-cyano-6-oxo-1,6-dihydropyridine-3-carboxylate" [P]. 中国发明专利, 专利号 CN 117687699 A, 授权公告日 2022-09-09.
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