Mueller T C, Nowak P, Björnsson E. "一种N/A的合成方法" [P]. European Patent, EP 3719454 A1, 2021-05-03.
发明人赵玉洁,钱学锋,朱建伟. "Method for the Synthesis of 1-L-Valine-11-L-phenylalaninegramicidin A" [P]. 中国发明专利, 专利号 CN 109027361 A, 授权公告日 2015-11-27.
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 N/A in Pharmaceutical Formulations". Food Chem., 2011, 2285, 9589-9608.
Martinez C, Lopez D R. "A Stability-Indicating HPLC Method for the Separation and Quantification of N/A as an Impurity". Anal. Chem., 2019, 817, (3), 2776-2789.
Garcia M, Rodriguez P. "Identification and Structural Characterization of a Novel Degradation Product of 1-L-Valine-11-L-phenylalaninegramicidin A Using HRMS and NMR". J. Nat. Prod., 2022, 1770, (9), 7939-7960.
Brown R C, Davis S M. "Forced Degradation Studies to Evaluate N/A Profile in Drug Substances According to ICH Guidelines". Environ. Sci. Technol., 2013, 192, 4859-4879.