发明人林芳,郭海燕,钱学锋. "Method for the Synthesis of 2-{[(4-bromo-2,5-dimethoxyphenyl)amino]methylidene}-5,5-dimethylcyclohexane-1,3-dione" [P]. 中国发明专利, 专利号 CN 109825469 A, 授权公告日 2017-03-18.
发明人冯建国,孙丽萍,高志强. "A Process for Preparing High-Purity 2-{[(4-bromo-2,5-dimethoxyphenyl)amino]methylidene}-5,5-dimethylcyclohexane-1,3-dione" [P]. 中国发明专利, 专利号 CN 115408484 B, 授权公告日 2021-08-13.
参考文献 Literature
Yang F, Sun W, Liu J. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Chromatogr. A, 2023, 2402, 6173-6197.
Mueller T, Schmidt R K. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Environ. Sci. Technol., 2013, 2107, (11), 6401-6423.
Yang F, Sun W, Liu J. "Identification and Structural Characterization of a Novel Degradation Product of 2-{[(4-bromo-2,5-dimethoxyphenyl)amino]methylidene}-5,5-dimethylcyclohexane-1,3-dione Using HRMS and NMR". J. Sep. Sci., 2011, 1602, 3458-3469.