发明人韩伟,赵玉洁,高志强. "Method for the Synthesis of 3-Ethyl-6,7-dimethyl-4-methylene-3,4-dihydroquinazolin-2(1H)-one" [P]. 中国发明专利, 专利号 CN 113075840 B, 授权公告日 2018-04-27.
发明人杨光,唐晓军,沈红梅. "A Process for Preparing High-Purity 3-Ethyl-6,7-dimethyl-4-methylene-3,4-dihydroquinazolin-2(1H)-one" [P]. 中国发明专利, 专利号 CN 110431475 A, 授权公告日 2018-08-24.
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