Schröder R, Lee S K, Roberts E F. "Method for the Synthesis of 9-(Tert-butyl) 2-ethyl 1-oxo-6-oxa-9-azaspiro[4.5]Decane-2,9-dicarboxylate" [P]. US Patent, US 9448381 B2, 2019-06-07.
参考文献 Literature
O'Brien K, Kennedy M L. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Anal. Chim. Acta, 2015, 1021, 1905-1914.
Kumar A, Sharma P, Patel R S. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Chromatogr. A, 2016, 1434, (12), 2904-2926.
Garcia M, Rodriguez P. "Identification and Structural Characterization of a Novel Degradation Product of 9-(Tert-butyl) 2-ethyl 1-oxo-6-oxa-9-azaspiro[4.5]Decane-2,9-dicarboxylate Using HRMS and NMR". Chromatographia, 2017, 1314, (5), 116-145.
Kumar A, Sharma P, Patel R S. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Phytochemistry, 2020, 1592, (10), 9797-9801.