Stevens L M, Williams B T, Park J H. "Method for the Synthesis of 3-Di cyano methylidine-2,3-dihydroxythiophene-3-yidino" [P]. US Patent, US 10338457 B2, 2025-04-06.
发明人李文辉,黄志刚,冯建国. "A Process for Preparing High-Purity 3-Di cyano methylidine-2,3-dihydroxythiophene-3-yidino" [P]. 中国发明专利, 专利号 CN 110952496 A, 授权公告日 2018-04-09.
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". J. Chromatogr. A, 2019, 540, (6), 1584-1604.
Brown R C, Davis S M. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Chem., 2012, 1889, (12), 1093-1116.
Wang L, Li J, Zhang H. "Identification and Structural Characterization of a Novel Degradation Product of 3-Di cyano methylidine-2,3-dihydroxythiophene-3-yidino Using HRMS and NMR". Sci. Total Environ., 2016, 2428, (12), 3100-3123.
Brown R C, Davis S M. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Nat. Prod., 2021, 2240, (10), 2137-2156.