Sørensen M, Björnsson E, Martínez F. "Method for the Synthesis of (R)-1-(((9H-Fluoren-9-yl)methoxy)carbonyl)piperidine-3-carboxylic acid" [P]. European Patent, EP 3525789 A1, 2022-03-08.
Jørgensen K, Nowak P, Kowalski A. "A Process for Preparing High-Purity (R)-1-(((9H-Fluoren-9-yl)methoxy)carbonyl)piperidine-3-carboxylic acid" [P]. European Patent, EP 3796985 A1, 2024-02-05.
参考文献 Literature
Lee J H, Choi Y S. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Nat. Prod., 2020, 1441, 7207-7212.
Yang F, Sun W, Liu J. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Chem., 2022, 323, 8021-8034.
Chen X Y, Liu M, Zhao W Q. "Identification and Structural Characterization of a Novel Degradation Product of (R)-1-(((9H-Fluoren-9-yl)methoxy)carbonyl)piperidine-3-carboxylic acid Using HRMS and NMR". Rapid Commun. Mass Spectrom., 2016, 424, (6), 2966-2993.