Brown S R, Chen K W, Thompson G K. "Method for the Synthesis of Ethyl 2-methylene-5-oxotetrahydro-1H-pyrrolizine-7a(5H)-carboxylate" [P]. US Patent, US 11649015 B2, 2025-01-26.
发明人韩伟,徐明华,刘建华. "A Process for Preparing High-Purity Ethyl 2-methylene-5-oxotetrahydro-1H-pyrrolizine-7a(5H)-carboxylate" [P]. 中国发明专利, 专利号 CN 111850869 A, 授权公告日 2016-11-11.
参考文献 Literature
Zhou X P, Huang L, Wu G. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Agric. Food Chem., 2023, 711, 6428-6440.
O'Brien K, Kennedy M L. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Chemosphere, 2025, 2318, (3), 3106-3109.
Martinez C, Lopez D R. "Identification and Structural Characterization of a Novel Degradation Product of Ethyl 2-methylene-5-oxotetrahydro-1H-pyrrolizine-7a(5H)-carboxylate Using HRMS and NMR". Talanta, 2022, 892, (8), 8633-8656.