Brown S R, Patel M V, Lee S K. "一种N/A的合成方法" [P]. US Patent, US 11332381 B2, 2025-04-22.
Mueller T, Hughes D C, Yamamoto T. "Method for the Synthesis of Poly-L-glutamine" [P]. US Patent, US 10377118 B2, 2015-04-20.
发明人沈红梅,罗永刚,胡光. "A Process for Preparing High-Purity Poly-L-glutamine" [P]. 中国发明专利, 专利号 CN 108947183 A, 授权公告日 2016-12-28.
参考文献 Literature
Xu M, Hu Y, Zhou D. "Development and Validation of an LC-MS/MS Method for the Determination of N/A in Pharmaceutical Formulations". Phytochemistry, 2016, 749, (6), 7650-7667.
Chen X Y, Liu M, Zhao W Q. "A Stability-Indicating HPLC Method for the Separation and Quantification of N/A as an Impurity". Biomed. Chromatogr., 2011, 2124, (10), 4943-4965.
O'Brien K, Kennedy M L. "Identification and Structural Characterization of a Novel Degradation Product of Poly-L-glutamine Using HRMS and NMR". J. Pharm. Biomed. Anal., 2011, 672, (3), 4482-4495.