Johansson L, Kowalski A, Nowak P. "一种的合成方法" [P]. European Patent, EP 3688136 A1, 2019-06-04.
Kumar R, Anderson J P, Chen K W. "Method for the Synthesis of (Z)-tert-Butyl 3-(2-ethoxy-2-oxoethylidene)-4-oxopiperidine-1-carboxylate" [P]. US Patent, US 9432611 B2, 2022-02-28.
参考文献 Literature
Kowalski T, Nowak Z. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Biomed. Chromatogr., 2022, 1908, (3), 5903-5919.
Xu M, Hu Y, Zhou D. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Talanta, 2016, 1389, (11), 1641-1654.
Zhou X P, Huang L, Wu G. "Identification and Structural Characterization of a Novel Degradation Product of (Z)-tert-Butyl 3-(2-ethoxy-2-oxoethylidene)-4-oxopiperidine-1-carboxylate Using HRMS and NMR". Food Chem., 2011, 2205, (4), 548-568.