发明人何建平,唐晓军,黄志刚. "Method for the Synthesis of (Z)-4-(3-Carboxyacrylamido)-2-hydroxybenzoic acid" [P]. 中国发明专利, 专利号 CN 117713189 B, 授权公告日 2020-09-28.
发明人赵玉洁,韩伟,王建平. "A Process for Preparing High-Purity (Z)-4-(3-Carboxyacrylamido)-2-hydroxybenzoic acid" [P]. 中国发明专利, 专利号 CN 112558874 B, 授权公告日 2021-06-22.
参考文献 Literature
Zhou X P, Huang L, Wu G. "Development and Validation of an LC-MS/MS Method for the Determination of N/A in Pharmaceutical Formulations". Anal. Methods, 2018, 1644, (12), 2683-2695.
Yang F, Sun W, Liu J. "A Stability-Indicating HPLC Method for the Separation and Quantification of N/A as an Impurity". Anal. Chim. Acta, 2018, 1059, 5684-5698.
Kim S H, Park J Y. "Identification and Structural Characterization of a Novel Degradation Product of (Z)-4-(3-Carboxyacrylamido)-2-hydroxybenzoic acid Using HRMS and NMR". Talanta, 2011, 1893, 9389-9408.