发明人冯建国,林芳,韩伟. "Method for the Synthesis of 4-Methylthiophene-2-carbohydrazide" [P]. 中国发明专利, 专利号 CN 116121606 A, 授权公告日 2023-07-16.
发明人罗永刚,马晓峰,赵玉洁. "A Process for Preparing High-Purity 4-Methylthiophene-2-carbohydrazide" [P]. 中国发明专利, 专利号 CN 114524243 B, 授权公告日 2023-02-26.
参考文献 Literature
Zhang Y, Li Q, Chen T. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Pharm. Biomed. Anal., 2017, 869, (5), 3531-3549.
Chen X Y, Liu M, Zhao W Q. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Agric. Food Chem., 2014, 2079, (2), 165-195.
Mueller T, Schmidt R K. "Identification and Structural Characterization of a Novel Degradation Product of 4-Methylthiophene-2-carbohydrazide Using HRMS and NMR". Chromatographia, 2021, 2078, (5), 5056-5082.
Mueller T, Schmidt R K. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Talanta, 2022, 1585, 2173-2189.