发明人刘建华,徐明华,李文辉. "Method for the Synthesis of tert-Butyl 3-(3-ethoxy-3-oxopropanamido)-3-(2-methoxy-2-oxoethyl)azetidine-1-carboxylate" [P]. 中国发明专利, 专利号 CN 109145570 A, 授权公告日 2017-02-19.
Stevens L M, Roberts E F, Kumar R. "A Process for Preparing High-Purity tert-Butyl 3-(3-ethoxy-3-oxopropanamido)-3-(2-methoxy-2-oxoethyl)azetidine-1-carboxylate" [P]. US Patent, US 9105234 B2, 2021-05-21.
参考文献 Literature
Zhang Y, Li Q, Chen T. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Anal. Methods, 2019, 710, 1031-1058.
Kowalski T, Nowak Z. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Molecules, 2019, 1538, 3592-3595.
Jensen P, Larsen A M, Olsen K. "Identification and Structural Characterization of a Novel Degradation Product of tert-Butyl 3-(3-ethoxy-3-oxopropanamido)-3-(2-methoxy-2-oxoethyl)azetidine-1-carboxylate Using HRMS and NMR". Environ. Sci. Technol., 2019, 504, 8338-8361.