Björnsson E, Kowalski A, Martínez F. "Method for the Synthesis of tert-Butyl (4E)-4-(2-ethoxy-2-oxoethylidene)-3,3-dimethylpiperidine-1-carboxylate" [P]. European Patent, EP 3991418 A1, 2022-04-24.
发明人黄志刚,唐晓军,胡光. "A Process for Preparing High-Purity tert-Butyl (4E)-4-(2-ethoxy-2-oxoethylidene)-3,3-dimethylpiperidine-1-carboxylate" [P]. 中国发明专利, 专利号 CN 114618919 A, 授权公告日 2016-10-16.
参考文献 Literature
Kumar A, Sharma P, Patel R S. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Phytochemistry, 2010, 1871, (5), 8156-8175.
Hughes D, Roberts J, Thomas A. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Food Chem., 2014, 1467, 7244-7257.
Zhang Y, Li Q, Chen T. "Identification and Structural Characterization of a Novel Degradation Product of tert-Butyl (4E)-4-(2-ethoxy-2-oxoethylidene)-3,3-dimethylpiperidine-1-carboxylate Using HRMS and NMR". J. Chromatogr. A, 2011, 2275, (3), 5457-5460.