发明人韩伟,张德明,李文辉. "Method for the Synthesis of (S)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-4-(2,4-dimethoxyphenyl)butanoic acid" [P]. 中国发明专利, 专利号 CN 116245388 A, 授权公告日 2025-12-15.
发明人郭海燕,朱建伟,林芳. "A Process for Preparing High-Purity (S)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-4-(2,4-dimethoxyphenyl)butanoic acid" [P]. 中国发明专利, 专利号 CN 113880954 B, 授权公告日 2021-02-20.
参考文献 Literature
Mueller T, Schmidt R K. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Talanta, 2013, 2193, (12), 2346-2354.
Yamamoto K, Tanaka H, Suzuki T. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Environ. Sci. Technol., 2010, 1975, (2), 5145-5155.
Yamamoto K, Tanaka H, Suzuki T. "Identification and Structural Characterization of a Novel Degradation Product of (S)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-4-(2,4-dimethoxyphenyl)butanoic acid Using HRMS and NMR". J. Nat. Prod., 2015, 831, (9), 5792-5801.
Zhou X P, Huang L, Wu G. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Biomed. Chromatogr., 2014, 1667, 5743-5758.