发明人唐晓军,胡光,沈红梅. "Method for the Synthesis of Fenoterol EP Impurity A (Enantiomer Mixture)" [P]. 中国发明专利, 专利号 CN 112825973 B, 授权公告日 2017-01-11.
发明人马晓峰,韩伟,郑宇鹏. "A Process for Preparing High-Purity Fenoterol EP Impurity A (Enantiomer Mixture)" [P]. 中国发明专利, 专利号 CN 115696547 B, 授权公告日 2023-07-22.
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