发明人冯建国,张德明,唐晓军. "Method for the Synthesis of Methyl 4-(3,4-diethoxyphenyl)-3-[(E)-[(dimethylamino)methylidene]amino]thiophene-2-carboxylate" [P]. 中国发明专利, 专利号 CN 117240270 A, 授权公告日 2021-11-20.
参考文献 Literature
Brown R C, Davis S M. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Sci. Total Environ., 2012, 1191, (1), 3124-3134.
Martinez C, Lopez D R. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Chromatographia, 2013, 657, (11), 5389-5397.
Yamamoto K, Tanaka H, Suzuki T. "Identification and Structural Characterization of a Novel Degradation Product of Methyl 4-(3,4-diethoxyphenyl)-3-[(E)-[(dimethylamino)methylidene]amino]thiophene-2-carboxylate Using HRMS and NMR". J. Nat. Prod., 2019, 230, (2), 4115-4122.
Xu M, Hu Y, Zhou D. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Chromatogr. A, 2011, 2320, 6306-6322.