发明人周伟,徐明华,张德明. "一种奥替溴铵杂质9的合成方法" [P]. 中国发明专利, 专利号 CN 117587870 A, 授权公告日 2025-10-12.
Johnson M A, Roberts E F, Thompson G K. "Method for the Synthesis of Otilonium Bromide Impurity 9" [P]. US Patent, US 9811564 B2, 2022-07-23.
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