发明人孙丽萍,罗永刚,高志强. "Method for the Synthesis of (S)-3-Ethyl-3-methyl-1,3-dihydrofuro[3,4-c]pyridine-6-carboxylic acid" [P]. 中国发明专利, 专利号 CN 108644213 B, 授权公告日 2016-09-11.
发明人马晓峰,林芳,黄志刚. "A Process for Preparing High-Purity (S)-3-Ethyl-3-methyl-1,3-dihydrofuro[3,4-c]pyridine-6-carboxylic acid" [P]. 中国发明专利, 专利号 CN 116586290 B, 授权公告日 2019-01-26.
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