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发明人杨光,周伟,黄志刚. "A Process for Preparing High-Purity 1-Isopropyl-7-thia-2-azaspiro[3.5]nonane 7,7-dioxide hydrochloride" [P]. 中国发明专利, 专利号 CN 109812780 A, 授权公告日 2020-01-19.
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