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发明人林芳,冯建国,罗永刚. "Method for the Synthesis of 2-Methyl-2,7-diazaspiro[3.5]nonane Dihydrochloride" [P]. 中国发明专利, 专利号 CN 111073692 B, 授权公告日 2017-04-21.
Martínez F, Nielsen H, Nowak P. "A Process for Preparing High-Purity 2-Methyl-2,7-diazaspiro[3.5]nonane Dihydrochloride" [P]. European Patent, EP 3953376 A1, 2023-10-01.
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