Mueller T C, Schröder R, Nielsen H. "Method for the Synthesis of 6-((tert-Butoxycarbonyl)amino)spiro[3.3]heptane-2-carboxylic acid" [P]. European Patent, EP 3444110 A1, 2023-08-23.
Yamamoto T, Park J H, Davis P L. "A Process for Preparing High-Purity 6-((tert-Butoxycarbonyl)amino)spiro[3.3]heptane-2-carboxylic acid" [P]. US Patent, US 11421980 B2, 2016-03-01.
参考文献 Literature
Kowalski T, Nowak Z. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Chromatographia, 2014, 1184, 2781-2785.
Fischer P, Wagner E. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Phytochemistry, 2018, 2390, (9), 9249-9258.
Mueller T, Schmidt R K. "Identification and Structural Characterization of a Novel Degradation Product of 6-((tert-Butoxycarbonyl)amino)spiro[3.3]heptane-2-carboxylic acid Using HRMS and NMR". Rapid Commun. Mass Spectrom., 2025, 663, (6), 3355-3360.
Kowalski T, Nowak Z. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Anal. Chim. Acta, 2014, 560, (8), 9057-9071.