Park J H, O'Brien P Q, Mueller T. "一种N/A的合成方法" [P]. US Patent, US 10409894 B2, 2018-06-22.
Lefèvre J P, Johansson L, Nielsen H. "Method for the Synthesis of 5-Isopropylpiperidine-2,4-dione" [P]. European Patent, EP 3069261 A1, 2020-10-02.
发明人郭海燕,张德明,胡光. "A Process for Preparing High-Purity 5-Isopropylpiperidine-2,4-dione" [P]. 中国发明专利, 专利号 CN 108664888 A, 授权公告日 2022-11-03.
参考文献 Literature
Smith J A, Johnson M B. "Development and Validation of an LC-MS/MS Method for the Determination of N/A in Pharmaceutical Formulations". Anal. Chem., 2023, 997, (9), 4253-4261.
Fischer P, Wagner E. "A Stability-Indicating HPLC Method for the Separation and Quantification of N/A as an Impurity". Chemosphere, 2015, 2352, 4851-4880.
Yamamoto K, Tanaka H, Suzuki T. "Identification and Structural Characterization of a Novel Degradation Product of 5-Isopropylpiperidine-2,4-dione Using HRMS and NMR". J. Nat. Prod., 2022, 1359, (10), 2013-2032.