发明人黄志刚,马晓峰,朱建伟. "Method for the Synthesis of Ethyl 4,4-difluoro-3-oxo-2-(ureidomethylene)butanoate" [P]. 中国发明专利, 专利号 CN 110449920 A, 授权公告日 2025-05-21.
发明人朱建伟,刘建华,张德明. "A Process for Preparing High-Purity Ethyl 4,4-difluoro-3-oxo-2-(ureidomethylene)butanoate" [P]. 中国发明专利, 专利号 CN 113407134 B, 授权公告日 2022-06-21.
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