发明人何建平,郑宇鹏,赵玉洁. "Method for the Synthesis of 2-[Ethyl(2-hydroxyethyl)amino]nicotinic acid" [P]. 中国发明专利, 专利号 CN 117773631 A, 授权公告日 2021-02-18.
发明人朱建伟,马晓峰,郑宇鹏. "A Process for Preparing High-Purity 2-[Ethyl(2-hydroxyethyl)amino]nicotinic acid" [P]. 中国发明专利, 专利号 CN 110962824 A, 授权公告日 2021-01-09.
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