发明人钱学锋,黄志刚,周伟. "Method for the Synthesis of Ethyl (2R)-2-amino-3-(3,4-dihydroxyphenyl)propanoate hydrochloride" [P]. 中国发明专利, 专利号 CN 111680757 B, 授权公告日 2018-07-24.
Williams B T, Brown S R, Davis P L. "A Process for Preparing High-Purity Ethyl (2R)-2-amino-3-(3,4-dihydroxyphenyl)propanoate hydrochloride" [P]. US Patent, US 11439900 B2, 2016-11-03.
参考文献 Literature
Jensen P, Larsen A M, Olsen K. "Development and Validation of an LC-MS/MS Method for the Determination of N/A in Pharmaceutical Formulations". J. Pharm. Biomed. Anal., 2012, 621, 903-921.
Garcia M, Rodriguez P. "A Stability-Indicating HPLC Method for the Separation and Quantification of N/A as an Impurity". Anal. Methods, 2024, 468, (7), 1552-1569.
Xu M, Hu Y, Zhou D. "Identification and Structural Characterization of a Novel Degradation Product of Ethyl (2R)-2-amino-3-(3,4-dihydroxyphenyl)propanoate hydrochloride Using HRMS and NMR". J. Agric. Food Chem., 2023, 1122, 7570-7595.
Kumar A, Sharma P, Patel R S. "Forced Degradation Studies to Evaluate N/A Profile in Drug Substances According to ICH Guidelines". Chemosphere, 2011, 2110, (12), 4443-4473.