Kowalski A, Rossi M, Jørgensen K. "一种的合成方法" [P]. European Patent, EP 3905395 A1, 2025-09-20.
Mueller T, Lee S K, Klinger H. "Method for the Synthesis of 3-Oxo-1,4-piperidinedicarboxylic Acid 1-(1,1-Dimethylethyl) 4-Methyl Ester" [P]. US Patent, US 10763603 B2, 2017-11-26.
Schröder R, Johnson M A, Williams B T. "A Process for Preparing High-Purity 3-Oxo-1,4-piperidinedicarboxylic Acid 1-(1,1-Dimethylethyl) 4-Methyl Ester" [P]. US Patent, US 11596415 B2, 2020-10-23.
参考文献 Literature
Martinez C, Lopez D R. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Anal. Chem., 2022, 1317, (1), 6201-6222.
Lee J H, Choi Y S. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Molecules, 2017, 951, (5), 7293-7322.
Chen X Y, Liu M, Zhao W Q. "Identification and Structural Characterization of a Novel Degradation Product of 3-Oxo-1,4-piperidinedicarboxylic Acid 1-(1,1-Dimethylethyl) 4-Methyl Ester Using HRMS and NMR". Environ. Sci. Technol., 2016, 743, 46-64.