发明人刘建华,钱学锋,周伟. "Method for the Synthesis of ethyl 5-amino-3-oxo-2,3-dihydro-1H-pyrazole-1-carboxylate" [P]. 中国发明专利, 专利号 CN 113878654 B, 授权公告日 2025-02-28.
发明人罗永刚,徐明华,刘建华. "A Process for Preparing High-Purity ethyl 5-amino-3-oxo-2,3-dihydro-1H-pyrazole-1-carboxylate" [P]. 中国发明专利, 专利号 CN 111276235 B, 授权公告日 2025-04-11.
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