发明人杨光,沈红梅,何建平. "Method for the Synthesis of 5-Nitro-3-pyrazolecarboxylic Acid Ethyl Ester" [P]. 中国发明专利, 专利号 CN 112107114 A, 授权公告日 2020-02-27.
发明人赵玉洁,郑宇鹏,高志强. "A Process for Preparing High-Purity 5-Nitro-3-pyrazolecarboxylic Acid Ethyl Ester" [P]. 中国发明专利, 专利号 CN 109354828 A, 授权公告日 2021-04-07.
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