发明人刘建华,马晓峰,王建平. "Method for the Synthesis of 5-ethyl-6-oxo-1H-pyridazine-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 115115897 B, 授权公告日 2017-01-06.
发明人钱学锋,罗永刚,郭海燕. "A Process for Preparing High-Purity 5-ethyl-6-oxo-1H-pyridazine-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 114974694 B, 授权公告日 2025-01-12.
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