发明人郭海燕,周伟,刘建华. "Method for the Synthesis of Ethyl 4-(3-amino-4-nitrophenyl)piperazine-1-carboxylate" [P]. 中国发明专利, 专利号 CN 115277342 A, 授权公告日 2015-11-19.
发明人冯建国,陈志强,唐晓军. "A Process for Preparing High-Purity Ethyl 4-(3-amino-4-nitrophenyl)piperazine-1-carboxylate" [P]. 中国发明专利, 专利号 CN 113551807 A, 授权公告日 2025-01-24.
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