Jørgensen K, Martínez F, Kowalski A. "Method for the Synthesis of cis-1-tert-Butyl 3-ethyl 4-methylpyrrolidine-1,3-dicarboxylate" [P]. European Patent, EP 3047750 A1, 2016-12-11.
Yamamoto T, Mueller T, Fischer A B. "A Process for Preparing High-Purity cis-1-tert-Butyl 3-ethyl 4-methylpyrrolidine-1,3-dicarboxylate" [P]. US Patent, US 9008812 B2, 2022-02-16.
参考文献 Literature
Brown R C, Davis S M. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Anal. Methods, 2014, 1523, (11), 2150-2174.
Jensen P, Larsen A M, Olsen K. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Chromatogr. A, 2014, 308, (5), 1567-1597.
Yamamoto K, Tanaka H, Suzuki T. "Identification and Structural Characterization of a Novel Degradation Product of cis-1-tert-Butyl 3-ethyl 4-methylpyrrolidine-1,3-dicarboxylate Using HRMS and NMR". Anal. Chim. Acta, 2025, 1277, 100-113.
Kowalski T, Nowak Z. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Chromatographia, 2014, 1101, 3578-3581.