发明人马晓峰,何建平,王建平. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 114339868 A, 授权公告日 2022-05-19.
发明人陈志强,沈红梅,冯建国. "Method for the Synthesis of 4-(3,5-Dichlorobenzoyl)-8-methyl-1-oxa-4-azaspiro[4.5]decane-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 112616492 A, 授权公告日 2018-09-12.
发明人郭海燕,黄志刚,高志强. "A Process for Preparing High-Purity 4-(3,5-Dichlorobenzoyl)-8-methyl-1-oxa-4-azaspiro[4.5]decane-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 111810513 B, 授权公告日 2016-01-22.
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