发明人朱建伟,赵玉洁,唐晓军. "Method for the Synthesis of 1-(7,7-Dimethyl-6,8-dioxa-2-azaspiro[3.5]nonan-2-yl)-2-(thiophen-2-yl)ethan-1-one" [P]. 中国发明专利, 专利号 CN 110424766 B, 授权公告日 2016-09-28.
发明人沈红梅,韩伟,王建平. "A Process for Preparing High-Purity 1-(7,7-Dimethyl-6,8-dioxa-2-azaspiro[3.5]nonan-2-yl)-2-(thiophen-2-yl)ethan-1-one" [P]. 中国发明专利, 专利号 CN 115721720 A, 授权公告日 2021-02-05.
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