Schröder R, Stevens L M, Hughes D C. "一种的合成方法" [P]. US Patent, US 11019908 B2, 2024-09-01.
Stevens L M, O'Brien P Q, Chen K W. "Method for the Synthesis of Tert-butyl 3-amino-6-cyclobutyl-4,6-dihydropyrrolo[3,4-c]pyrazole-5(1H)-carboxylate" [P]. US Patent, US 11112266 B2, 2020-09-23.
发明人孙丽萍,唐晓军,徐明华. "A Process for Preparing High-Purity Tert-butyl 3-amino-6-cyclobutyl-4,6-dihydropyrrolo[3,4-c]pyrazole-5(1H)-carboxylate" [P]. 中国发明专利, 专利号 CN 117130342 B, 授权公告日 2022-04-08.
参考文献 Literature
Xu M, Hu Y, Zhou D. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Agric. Food Chem., 2023, 2371, (7), 6982-7011.
O'Brien K, Kennedy M L. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Rapid Commun. Mass Spectrom., 2017, 392, (12), 3014-3018.
Brown R C, Davis S M. "Identification and Structural Characterization of a Novel Degradation Product of Tert-butyl 3-amino-6-cyclobutyl-4,6-dihydropyrrolo[3,4-c]pyrazole-5(1H)-carboxylate Using HRMS and NMR". Molecules, 2021, 255, 4535-4546.
Fischer P, Wagner E. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Phytochemistry, 2015, 2299, (8), 7401-7410.