发明人钱学锋,韩伟,何建平. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 115848223 A, 授权公告日 2019-04-24.
发明人陈志强,刘建华,黄志刚. "Method for the Synthesis of 5-tert-Butyl 2-ethyl 6,7-dihydropyrazolo[1,5-a]pyrazine-2,5(4H)-dicarboxylate" [P]. 中国发明专利, 专利号 CN 109837364 A, 授权公告日 2023-12-20.
发明人林芳,赵玉洁,马晓峰. "A Process for Preparing High-Purity 5-tert-Butyl 2-ethyl 6,7-dihydropyrazolo[1,5-a]pyrazine-2,5(4H)-dicarboxylate" [P]. 中国发明专利, 专利号 CN 110152452 B, 授权公告日 2021-02-10.
参考文献 Literature
Kim S H, Park J Y. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Phytochemistry, 2015, 498, 4314-4339.
Kowalski T, Nowak Z. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Food Chem., 2024, 2266, (11), 2935-2962.
Hughes D, Roberts J, Thomas A. "Identification and Structural Characterization of a Novel Degradation Product of 5-tert-Butyl 2-ethyl 6,7-dihydropyrazolo[1,5-a]pyrazine-2,5(4H)-dicarboxylate Using HRMS and NMR". Anal. Chim. Acta, 2016, 2044, 6229-6258.