Mueller T, Fischer A B, Kumar R. "一种的合成方法" [P]. US Patent, US 11320346 B2, 2022-07-01.
发明人钱学锋,杨光,朱建伟. "Method for the Synthesis of tert-Butyl 3-amino-2-ethyl-4,6-dihydropyrrolo[3,4-c]pyrazole-5(2H)-carboxylate" [P]. 中国发明专利, 专利号 CN 112706580 B, 授权公告日 2020-10-03.
Patel M V, Mueller T, Stevens L M. "A Process for Preparing High-Purity tert-Butyl 3-amino-2-ethyl-4,6-dihydropyrrolo[3,4-c]pyrazole-5(2H)-carboxylate" [P]. US Patent, US 10434186 B2, 2015-06-18.
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". Sci. Total Environ., 2020, 2309, 6652-6655.
Yang F, Sun W, Liu J. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Rapid Commun. Mass Spectrom., 2014, 234, (10), 9769-9777.
Zhou X P, Huang L, Wu G. "Identification and Structural Characterization of a Novel Degradation Product of tert-Butyl 3-amino-2-ethyl-4,6-dihydropyrrolo[3,4-c]pyrazole-5(2H)-carboxylate Using HRMS and NMR". Anal. Chem., 2010, 1887, (1), 9774-9778.
Kim S H, Park J Y. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Environ. Sci. Technol., 2010, 353, (5), 5642-5659.