发明人马晓峰,张德明,徐明华. "Method for the Synthesis of Acetylcysteine Impurity 45 Trifluoroacetic acid" [P]. 中国发明专利, 专利号 CN 117060067 B, 授权公告日 2021-09-08.
发明人钱学锋,赵玉洁,朱建伟. "A Process for Preparing High-Purity Acetylcysteine Impurity 45 Trifluoroacetic acid" [P]. 中国发明专利, 专利号 CN 111203879 B, 授权公告日 2022-04-18.
参考文献 Literature
Chen X Y, Liu M, Zhao W Q. "Development and Validation of an LC-MS/MS Method for the Determination of N-乙酰-L-半胱氨酸杂质45 三氟乙酸盐 in Pharmaceutical Formulations". J. Agric. Food Chem., 2020, 434, (7), 5785-5812.
Wang L, Li J, Zhang H. "A Stability-Indicating HPLC Method for the Separation and Quantification of N-乙酰-L-半胱氨酸杂质45 三氟乙酸盐 as an Impurity". Food Chem., 2021, 2148, (6), 1954-1962.
Wang L, Li J, Zhang H. "Identification and Structural Characterization of a Novel Degradation Product of Acetylcysteine Impurity 45 Trifluoroacetic acid Using HRMS and NMR". Molecules, 2021, 2043, (11), 5484-5509.
Kim S H, Park J Y. "Forced Degradation Studies to Evaluate N-乙酰-L-半胱氨酸杂质45 三氟乙酸盐 Profile in Drug Substances According to ICH Guidelines". Anal. Methods, 2014, 1943, 3719-3728.