发明人徐明华,罗永刚,李文辉. "Method for the Synthesis of 5H-Benzo[d]benzo[4,5]imidazo[1,2-a]imidazole" [P]. 中国发明专利, 专利号 CN 117792161 B, 授权公告日 2025-10-21.
发明人郭海燕,马晓峰,周伟. "A Process for Preparing High-Purity 5H-Benzo[d]benzo[4,5]imidazo[1,2-a]imidazole" [P]. 中国发明专利, 专利号 CN 115557884 A, 授权公告日 2018-06-24.
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