发明人罗永刚,高志强,沈红梅. "Method for the Synthesis of 5,7-Dichloro-1-methylpyrido[3,4-d]pyridazin-4(3H)-one" [P]. 中国发明专利, 专利号 CN 115864595 B, 授权公告日 2020-07-19.
发明人郑宇鹏,罗永刚,黄志刚. "A Process for Preparing High-Purity 5,7-Dichloro-1-methylpyrido[3,4-d]pyridazin-4(3H)-one" [P]. 中国发明专利, 专利号 CN 111477846 A, 授权公告日 2015-12-27.
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