Nowak P, Martínez F, Nielsen H. "一种的合成方法" [P]. European Patent, EP 3720446 A1, 2021-06-11.
Mueller T, Park J H, Patel M V. "Method for the Synthesis of 5-Azaspiro[2.4]Heptane-1-carbonitrile" [P]. US Patent, US 11454987 B2, 2022-06-09.
Chen K W, Hughes D C, O'Brien P Q. "A Process for Preparing High-Purity 5-Azaspiro[2.4]Heptane-1-carbonitrile" [P]. US Patent, US 11341906 B2, 2018-09-19.
参考文献 Literature
Zhou X P, Huang L, Wu G. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Molecules, 2021, 570, (10), 294-302.
Fischer P, Wagner E. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Chem., 2019, 2298, (9), 3118-3126.
Jensen P, Larsen A M, Olsen K. "Identification and Structural Characterization of a Novel Degradation Product of 5-Azaspiro[2.4]Heptane-1-carbonitrile Using HRMS and NMR". J. Sep. Sci., 2022, 1939, 3786-3793.
Zhou X P, Huang L, Wu G. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Biomed. Chromatogr., 2016, 1880, (8), 8826-8833.