Johansson L, Mueller T C, Schröder R. "一种N/A的合成方法" [P]. European Patent, EP 3965686 A1, 2020-10-08.
发明人杨光,沈红梅,林芳. "Method for the Synthesis of 4-Methoxybenzofuran-2-carbaldehyde" [P]. 中国发明专利, 专利号 CN 109793966 A, 授权公告日 2020-12-01.
参考文献 Literature
Yamamoto K, Tanaka H, Suzuki T. "Development and Validation of an LC-MS/MS Method for the Determination of N/A in Pharmaceutical Formulations". Anal. Chim. Acta, 2019, 1772, 953-960.
Lee J H, Choi Y S. "A Stability-Indicating HPLC Method for the Separation and Quantification of N/A as an Impurity". Chromatographia, 2022, 490, (3), 1711-1727.
Jensen P, Larsen A M, Olsen K. "Identification and Structural Characterization of a Novel Degradation Product of 4-Methoxybenzofuran-2-carbaldehyde Using HRMS and NMR". J. Pharm. Biomed. Anal., 2016, 522, (5), 8503-8517.