发明人徐明华,赵玉洁,何建平. "Method for the Synthesis of tert-Butyl 1-oxo-1,5,7,8-tetrahydropyrido[3,4-d]pyridazine-6(2H)-carboxylate" [P]. 中国发明专利, 专利号 CN 109501566 B, 授权公告日 2020-01-17.
发明人周伟,刘建华,高志强. "A Process for Preparing High-Purity tert-Butyl 1-oxo-1,5,7,8-tetrahydropyrido[3,4-d]pyridazine-6(2H)-carboxylate" [P]. 中国发明专利, 专利号 CN 108390620 A, 授权公告日 2021-10-10.
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