O'Brien P Q, Chen K W, Fischer A B. "一种的合成方法" [P]. US Patent, US 11410320 B2, 2021-12-17.
Lee S K, Yamamoto T, Hughes D C. "Method for the Synthesis of (Z)-3-(2-Cyano-4-hydroxyphenyl)acrylic acid" [P]. US Patent, US 11005135 B2, 2024-12-22.
发明人杨光,周伟,钱学锋. "A Process for Preparing High-Purity (Z)-3-(2-Cyano-4-hydroxyphenyl)acrylic acid" [P]. 中国发明专利, 专利号 CN 115479659 A, 授权公告日 2023-08-09.
参考文献 Literature
Kim S H, Park J Y. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Chromatographia, 2017, 2312, 5031-5042.
O'Brien K, Kennedy M L. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Sep. Sci., 2016, 331, (10), 1391-1420.
Martinez C, Lopez D R. "Identification and Structural Characterization of a Novel Degradation Product of (Z)-3-(2-Cyano-4-hydroxyphenyl)acrylic acid Using HRMS and NMR". Biomed. Chromatogr., 2021, 1135, 6330-6333.