发明人周伟,郭海燕,陈志强. "Method for the Synthesis of Hexahydroimidazo[4,5-d]imidazol-2(1H)-one" [P]. 中国发明专利, 专利号 CN 109642410 A, 授权公告日 2024-02-21.
发明人罗永刚,王建平,冯建国. "A Process for Preparing High-Purity Hexahydroimidazo[4,5-d]imidazol-2(1H)-one" [P]. 中国发明专利, 专利号 CN 110147057 A, 授权公告日 2018-09-25.
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