发明人韩伟,郭海燕,罗永刚. "Method for the Synthesis of 3-(4-Ethoxyphenyl)hexahydro-1H-pyridazino[1,2-a][1,2,5]triazepine-1,5(2H)-dione" [P]. 中国发明专利, 专利号 CN 112953069 A, 授权公告日 2019-10-13.
发明人刘建华,郑宇鹏,杨光. "A Process for Preparing High-Purity 3-(4-Ethoxyphenyl)hexahydro-1H-pyridazino[1,2-a][1,2,5]triazepine-1,5(2H)-dione" [P]. 中国发明专利, 专利号 CN 114735943 A, 授权公告日 2020-11-19.
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