Klinger H, Lee S K, Williams B T. "Method for the Synthesis of tert-Butyl 3,3-difluoro-1,6-diazaspiro[3.4]octane-6-carboxylate" [P]. US Patent, US 10232744 B2, 2022-01-16.
发明人何建平,李文辉,韩伟. "A Process for Preparing High-Purity tert-Butyl 3,3-difluoro-1,6-diazaspiro[3.4]octane-6-carboxylate" [P]. 中国发明专利, 专利号 CN 117235423 B, 授权公告日 2021-08-01.
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". Chemosphere, 2025, 801, (3), 8489-8494.
Zhou X P, Huang L, Wu G. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Sci. Total Environ., 2023, 220, 7621-7627.
Kumar A, Sharma P, Patel R S. "Identification and Structural Characterization of a Novel Degradation Product of tert-Butyl 3,3-difluoro-1,6-diazaspiro[3.4]octane-6-carboxylate Using HRMS and NMR". Food Chem., 2022, 272, (7), 1550-1576.
Chen X Y, Liu M, Zhao W Q. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Anal. Chim. Acta, 2020, 1865, (12), 5168-5173.