发明人黄志刚,韩伟,朱建伟. "Method for the Synthesis of Difluoro[[2-[[1-oxo-3-[5-[[5-(4-phenyl-1,3-butadien-1-yl)-2H-pyrrol-2-ylidene-κN]methyl]-1H-pyrrol-2-yl-κN]propyl]amino]ethyl]triphenylphosphoniumato]-Boron bromide" [P]. 中国发明专利, 专利号 CN 109589144 A, 授权公告日 2021-07-19.
Patel M V, Thompson G K, Park J H. "A Process for Preparing High-Purity Difluoro[[2-[[1-oxo-3-[5-[[5-(4-phenyl-1,3-butadien-1-yl)-2H-pyrrol-2-ylidene-κN]methyl]-1H-pyrrol-2-yl-κN]propyl]amino]ethyl]triphenylphosphoniumato]-Boron bromide" [P]. US Patent, US 11562613 B2, 2021-01-07.
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". Sci. Total Environ., 2015, 2228, 8709-8713.
Kumar A, Sharma P, Patel R S. "A Stability-Indicating HPLC Method for the Separation and Quantification of N/A as an Impurity". Anal. Chem., 2021, 1971, 4928-4955.
Yamamoto K, Tanaka H, Suzuki T. "Identification and Structural Characterization of a Novel Degradation Product of Difluoro[[2-[[1-oxo-3-[5-[[5-(4-phenyl-1,3-butadien-1-yl)-2H-pyrrol-2-ylidene-κN]methyl]-1H-pyrrol-2-yl-κN]propyl]amino]ethyl]triphenylphosphoniumato]-Boron bromide Using HRMS and NMR". Chromatographia, 2025, 914, 2752-2774.
Garcia M, Rodriguez P. "Forced Degradation Studies to Evaluate N/A Profile in Drug Substances According to ICH Guidelines". J. Chromatogr. A, 2014, 710, (1), 4966-4975.