Rossi M, Nowak P, Nielsen H. "一种的合成方法" [P]. European Patent, EP 3779281 A1, 2020-06-14.
发明人黄志刚,何建平,李文辉. "Method for the Synthesis of (Z)-5-Hydroxy-2-(2-hydroxybenzylidene)benzofuran-3(2H)-one" [P]. 中国发明专利, 专利号 CN 115050596 B, 授权公告日 2021-09-05.
发明人张德明,郭海燕,黄志刚. "A Process for Preparing High-Purity (Z)-5-Hydroxy-2-(2-hydroxybenzylidene)benzofuran-3(2H)-one" [P]. 中国发明专利, 专利号 CN 116198735 B, 授权公告日 2025-06-07.
参考文献 Literature
Kumar A, Sharma P, Patel R S. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Molecules, 2023, 1331, 7847-7867.
Yang F, Sun W, Liu J. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Chromatographia, 2022, 1092, 2908-2913.
Xu M, Hu Y, Zhou D. "Identification and Structural Characterization of a Novel Degradation Product of (Z)-5-Hydroxy-2-(2-hydroxybenzylidene)benzofuran-3(2H)-one Using HRMS and NMR". J. Nat. Prod., 2021, 337, 641-668.