发明人刘建华,孙丽萍,徐明华. "Method for the Synthesis of 2-Formyl-5,6-dihydro-4H-pyrrolo[1,2-b]pyrazole-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 111569777 A, 授权公告日 2019-06-22.
发明人陈志强,赵玉洁,钱学锋. "A Process for Preparing High-Purity 2-Formyl-5,6-dihydro-4H-pyrrolo[1,2-b]pyrazole-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 108255629 B, 授权公告日 2020-01-15.
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