发明人钱学锋,朱建伟,胡光. "Method for the Synthesis of 5-Oxopiperazine-2-carboxylic acid hydrochloride" [P]. 中国发明专利, 专利号 CN 114273269 B, 授权公告日 2023-02-23.
发明人赵玉洁,马晓峰,郑宇鹏. "A Process for Preparing High-Purity 5-Oxopiperazine-2-carboxylic acid hydrochloride" [P]. 中国发明专利, 专利号 CN 113891129 A, 授权公告日 2016-11-23.
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". Anal. Chem., 2019, 1779, (12), 6338-6358.
Yamamoto K, Tanaka H, Suzuki T. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Food Chem., 2013, 1190, (9), 3572-3587.
Chen X Y, Liu M, Zhao W Q. "Identification and Structural Characterization of a Novel Degradation Product of 5-Oxopiperazine-2-carboxylic acid hydrochloride Using HRMS and NMR". Phytochemistry, 2019, 290, 3035-3059.