Schröder R, Johnson M A, Davis P L. "一种2-(3,4-dimethoxyphenyl)-2-ethylbutanoic acid的合成方法" [P]. US Patent, US 11147219 B2, 2020-06-03.
发明人林芳,张德明,郑宇鹏. "Method for the Synthesis of 2-(3,4-dimethoxyphenyl)-2-ethylbutanoic acid" [P]. 中国发明专利, 专利号 CN 108052348 B, 授权公告日 2019-10-26.
发明人冯建国,陈志强,孙丽萍. "A Process for Preparing High-Purity 2-(3,4-dimethoxyphenyl)-2-ethylbutanoic acid" [P]. 中国发明专利, 专利号 CN 117339689 B, 授权公告日 2021-05-04.
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