发明人黄志刚,高志强,钱学锋. "Method for the Synthesis of 4-(3-Chlorobenzoyl)-1-oxa-4-azaspiro[4.5]decane-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 116794658 B, 授权公告日 2015-02-11.
发明人徐明华,陈志强,杨光. "A Process for Preparing High-Purity 4-(3-Chlorobenzoyl)-1-oxa-4-azaspiro[4.5]decane-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 108334476 A, 授权公告日 2020-08-24.
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