发明人刘建华,唐晓军,罗永刚. "Method for the Synthesis of 4-(Methylanilino)-4-oxobutanoic acid" [P]. 中国发明专利, 专利号 CN 112601561 A, 授权公告日 2018-10-12.
发明人冯建国,杨光,徐明华. "A Process for Preparing High-Purity 4-(Methylanilino)-4-oxobutanoic acid" [P]. 中国发明专利, 专利号 CN 114731348 A, 授权公告日 2023-02-17.
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