发明人杨光,孙丽萍,徐明华. "Method for the Synthesis of 3-tert-Butyl 1-methyl 1,2-dihydropyrido[3,4-d]pyridazine-1,3(4H)-dicarboxylate" [P]. 中国发明专利, 专利号 CN 111942213 B, 授权公告日 2019-03-12.
Björnsson E, Jørgensen K, Nielsen H. "A Process for Preparing High-Purity 3-tert-Butyl 1-methyl 1,2-dihydropyrido[3,4-d]pyridazine-1,3(4H)-dicarboxylate" [P]. European Patent, EP 3463037 A1, 2021-05-09.
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