Williams B T, Park J H, Patel M V. "Method for the Synthesis of Methyl 2-ethyl-2-pyrrolidinecarboxylate hydrochloride" [P]. US Patent, US 11580294 B2, 2021-12-23.
Lee S K, Johnson M A, Davis P L. "A Process for Preparing High-Purity Methyl 2-ethyl-2-pyrrolidinecarboxylate hydrochloride" [P]. US Patent, US 9551099 B2, 2020-10-05.
参考文献 Literature
Mueller T, Schmidt R K. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Biomed. Chromatogr., 2014, 1800, (12), 5131-5153.
Garcia M, Rodriguez P. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Methods, 2016, 1638, 5217-5239.
Zhang Y, Li Q, Chen T. "Identification and Structural Characterization of a Novel Degradation Product of Methyl 2-ethyl-2-pyrrolidinecarboxylate hydrochloride Using HRMS and NMR". Anal. Chem., 2018, 1791, (4), 2591-2603.