发明人罗永刚,刘建华,周伟. "Method for the Synthesis of Methyl 3-methyl-7-oxo-6,7-dihydroisoxazolo[3,4-d]pyridazine-4-carboxylate" [P]. 中国发明专利, 专利号 CN 109239276 B, 授权公告日 2021-02-02.
发明人黄志刚,周伟,何建平. "A Process for Preparing High-Purity Methyl 3-methyl-7-oxo-6,7-dihydroisoxazolo[3,4-d]pyridazine-4-carboxylate" [P]. 中国发明专利, 专利号 CN 109404178 B, 授权公告日 2024-04-01.
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