发明人周伟,马晓峰,张德明. "Method for the Synthesis of Ethyl 4-(4-methoxy-6-oxo-1-phenyl-1,6-dihydropyridazine-3-carbonyl)piperazine-1-carboxylate" [P]. 中国发明专利, 专利号 CN 111457314 A, 授权公告日 2022-09-19.
发明人周伟,唐晓军,胡光. "A Process for Preparing High-Purity Ethyl 4-(4-methoxy-6-oxo-1-phenyl-1,6-dihydropyridazine-3-carbonyl)piperazine-1-carboxylate" [P]. 中国发明专利, 专利号 CN 108757807 B, 授权公告日 2017-07-25.
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