发明人杨光,李文辉,孙丽萍. "一种噻托溴铵EP杂质D的合成方法" [P]. 中国发明专利, 专利号 CN 114386578 A, 授权公告日 2024-06-25.
发明人高志强,何建平,杨光. "Method for the Synthesis of Tiotropium EP Impurity D" [P]. 中国发明专利, 专利号 CN 113804426 B, 授权公告日 2022-10-07.
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