Lee S K, Chen K W, Thompson G K. "一种的合成方法" [P]. US Patent, US 11584088 B2, 2022-04-08.
Anderson J P, Patel M V, Fischer A B. "Method for the Synthesis of 4-(2-Oxopyrrolidin-1-yl)cyclohexanecarboxylic acid" [P]. US Patent, US 10744441 B2, 2019-01-24.
Fischer A B, Hughes D C, Thompson G K. "A Process for Preparing High-Purity 4-(2-Oxopyrrolidin-1-yl)cyclohexanecarboxylic acid" [P]. US Patent, US 10482956 B2, 2020-08-19.
参考文献 Literature
Kim S H, Park J Y. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Chromatographia, 2012, 2250, (1), 7478-7484.
Lee J H, Choi Y S. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Molecules, 2018, 370, (5), 565-568.
Kumar A, Sharma P, Patel R S. "Identification and Structural Characterization of a Novel Degradation Product of 4-(2-Oxopyrrolidin-1-yl)cyclohexanecarboxylic acid Using HRMS and NMR". Anal. Methods, 2012, 1886, (8), 7673-7676.
Kowalski T, Nowak Z. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Chromatogr. A, 2017, 746, (1), 8930-8937.