发明人冯建国,周伟,何建平. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 110795433 A, 授权公告日 2022-03-09.
发明人黄志刚,沈红梅,郭海燕. "Method for the Synthesis of 1-(2,3-Dihydrobenzo[b][1,4]dioxin-6-yl)-3-(2,4-dimethoxypyrimidin-5-yl)urea" [P]. 中国发明专利, 专利号 CN 115905806 B, 授权公告日 2016-01-02.
发明人高志强,周伟,徐明华. "A Process for Preparing High-Purity 1-(2,3-Dihydrobenzo[b][1,4]dioxin-6-yl)-3-(2,4-dimethoxypyrimidin-5-yl)urea" [P]. 中国发明专利, 专利号 CN 110181506 B, 授权公告日 2022-05-06.
参考文献 Literature
Smith J A, Johnson M B. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Anal. Chem., 2012, 1523, (2), 598-619.
Xu M, Hu Y, Zhou D. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Chim. Acta, 2019, 1863, (10), 8837-8846.
Kowalski T, Nowak Z. "Identification and Structural Characterization of a Novel Degradation Product of 1-(2,3-Dihydrobenzo[b][1,4]dioxin-6-yl)-3-(2,4-dimethoxypyrimidin-5-yl)urea Using HRMS and NMR". Biomed. Chromatogr., 2016, 1546, 610-630.