Johnson M A, Fischer A B, Kumar R. "一种1-{[(tert-butoxy)carbonyl](cyclopropyl)amino}cyclobutane-1-carboxylic acid的合成方法" [P]. US Patent, US 9205422 B2, 2025-09-03.
发明人孙丽萍,李文辉,罗永刚. "Method for the Synthesis of 1-{[(tert-butoxy)carbonyl](cyclopropyl)amino}cyclobutane-1-carboxylic acid" [P]. 中国发明专利, 专利号 CN 109157223 A, 授权公告日 2015-06-12.
Kowalski A, Mueller T C, Nowak P. "A Process for Preparing High-Purity 1-{[(tert-butoxy)carbonyl](cyclopropyl)amino}cyclobutane-1-carboxylic acid" [P]. European Patent, EP 3557315 A1, 2022-06-07.
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 1-{[(tert-butoxy)carbonyl](cyclopropyl)amino}cyclobutane-1-carboxylic acid in Pharmaceutical Formulations". J. Agric. Food Chem., 2025, 2366, (6), 8404-8414.
O'Brien K, Kennedy M L. "A Stability-Indicating HPLC Method for the Separation and Quantification of 1-{[(tert-butoxy)carbonyl](cyclopropyl)amino}cyclobutane-1-carboxylic acid as an Impurity". Food Chem., 2020, 1723, 4205-4228.
Kowalski T, Nowak Z. "Identification and Structural Characterization of a Novel Degradation Product of 1-{[(tert-butoxy)carbonyl](cyclopropyl)amino}cyclobutane-1-carboxylic acid Using HRMS and NMR". Anal. Methods, 2024, 1106, 8988-9013.
Kumar A, Sharma P, Patel R S. "Forced Degradation Studies to Evaluate 1-{[(tert-butoxy)carbonyl](cyclopropyl)amino}cyclobutane-1-carboxylic acid Profile in Drug Substances According to ICH Guidelines". J. Chromatogr. A, 2024, 1381, 445-449.