Fischer A B, Brown S R, Davis P L. "一种的合成方法" [P]. US Patent, US 9362345 B2, 2022-07-13.
发明人胡光,杨光,周伟. "Method for the Synthesis of 2,6-Diazaspiro[3.3]heptane-2,6-dicarboxylic acid, 2,6-bis(1,1-dimethylethyl) ester" [P]. 中国发明专利, 专利号 CN 113738996 B, 授权公告日 2025-11-23.
发明人胡光,沈红梅,朱建伟. "A Process for Preparing High-Purity 2,6-Diazaspiro[3.3]heptane-2,6-dicarboxylic acid, 2,6-bis(1,1-dimethylethyl) ester" [P]. 中国发明专利, 专利号 CN 108168146 B, 授权公告日 2024-01-15.
参考文献 Literature
Fischer P, Wagner E. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Biomed. Chromatogr., 2010, 1166, 7504-7525.
Lee J H, Choi Y S. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Rapid Commun. Mass Spectrom., 2013, 2304, (7), 4030-4048.
Hughes D, Roberts J, Thomas A. "Identification and Structural Characterization of a Novel Degradation Product of 2,6-Diazaspiro[3.3]heptane-2,6-dicarboxylic acid, 2,6-bis(1,1-dimethylethyl) ester Using HRMS and NMR". Anal. Chem., 2019, 1402, 8642-8669.
O'Brien K, Kennedy M L. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Agric. Food Chem., 2023, 1301, (1), 892-915.