发明人林芳,罗永刚,黄志刚. "Method for the Synthesis of Cromoglicate EP Impurity A" [P]. 中国发明专利, 专利号 CN 113585702 A, 授权公告日 2022-06-18.
发明人郭海燕,罗永刚,高志强. "A Process for Preparing High-Purity Cromoglicate EP Impurity A" [P]. 中国发明专利, 专利号 CN 112295957 B, 授权公告日 2024-09-10.
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