Hughes D C, Stevens L M, Brown S R. "一种的合成方法" [P]. US Patent, US 10755240 B2, 2018-09-01.
发明人胡光,韩伟,何建平. "Method for the Synthesis of Ethyl (4aS,5aS)-1-(pyrazin-2-yl)-4,4a,5,5a-tetrahydro-1H-cyclopropa[4,5]cyclopenta[1,2-c]pyrazole-3-carboxylate" [P]. 中国发明专利, 专利号 CN 114947066 A, 授权公告日 2018-06-06.
发明人张德明,黄志刚,高志强. "A Process for Preparing High-Purity Ethyl (4aS,5aS)-1-(pyrazin-2-yl)-4,4a,5,5a-tetrahydro-1H-cyclopropa[4,5]cyclopenta[1,2-c]pyrazole-3-carboxylate" [P]. 中国发明专利, 专利号 CN 113951207 B, 授权公告日 2017-05-01.
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". J. Sep. Sci., 2013, 2153, 5164-5189.
Zhou X P, Huang L, Wu G. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Pharm. Biomed. Anal., 2010, 1361, 3190-3219.
Xu M, Hu Y, Zhou D. "Identification and Structural Characterization of a Novel Degradation Product of Ethyl (4aS,5aS)-1-(pyrazin-2-yl)-4,4a,5,5a-tetrahydro-1H-cyclopropa[4,5]cyclopenta[1,2-c]pyrazole-3-carboxylate Using HRMS and NMR". Chromatographia, 2024, 489, (4), 1689-1696.
Kowalski T, Nowak Z. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Food Chem., 2011, 996, 7689-7705.