发明人王建平,沈红梅,林芳. "Method for the Synthesis of Calcium Levofolinate Pentahydrate - Impurity G (Dihydrate Salt)" [P]. 中国发明专利, 专利号 CN 109878466 A, 授权公告日 2023-05-15.
发明人马晓峰,黄志刚,韩伟. "A Process for Preparing High-Purity Calcium Levofolinate Pentahydrate - Impurity G (Dihydrate Salt)" [P]. 中国发明专利, 专利号 CN 108250857 A, 授权公告日 2017-02-07.
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