发明人林芳,孙丽萍,何建平. "Method for the Synthesis of Potassium (R)-2-((4-ethoxy-4-oxobut-2-en-2-yl)amino)-2-(4-hydroxyphenyl)acetate" [P]. 中国发明专利, 专利号 CN 108410404 A, 授权公告日 2024-02-20.
发明人郭海燕,张德明,杨光. "A Process for Preparing High-Purity Potassium (R)-2-((4-ethoxy-4-oxobut-2-en-2-yl)amino)-2-(4-hydroxyphenyl)acetate" [P]. 中国发明专利, 专利号 CN 111273646 A, 授权公告日 2025-09-09.
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