发明人高志强,陈志强,马晓峰. "Method for the Synthesis of n-(Sec-butyl)-5-ethyl-4-methylthiophene-2-carboxamide" [P]. 中国发明专利, 专利号 CN 110968425 B, 授权公告日 2021-11-17.
参考文献 Literature
Kowalski T, Nowak Z. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Biomed. Chromatogr., 2023, 1306, 3309-3317.
O'Brien K, Kennedy M L. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Chem., 2019, 1121, (7), 6795-6815.
Smith J A, Johnson M B. "Identification and Structural Characterization of a Novel Degradation Product of n-(Sec-butyl)-5-ethyl-4-methylthiophene-2-carboxamide Using HRMS and NMR". Chemosphere, 2016, 1224, 3197-3224.
O'Brien K, Kennedy M L. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Rapid Commun. Mass Spectrom., 2022, 731, (11), 8647-8653.