发明人王建平,韩伟,李文辉. "Method for the Synthesis of 4-Amino-5-carbamoyl-1,2-dimethyl-2,3-dihydro-1H-pyrazole-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 109908730 B, 授权公告日 2021-11-19.
Johansson L, Jørgensen K, Rossi M. "A Process for Preparing High-Purity 4-Amino-5-carbamoyl-1,2-dimethyl-2,3-dihydro-1H-pyrazole-3-carboxylic acid" [P]. European Patent, EP 3701467 A1, 2020-09-15.
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