Chen K W, Anderson J P, Patel M V. "Method for the Synthesis of 1-[3-Chloro-5-(trifluoromethyl)pyridin-2-yl]-N'-[(1E)-(4-methoxyphenyl)methylidene]piperidine-4-carbohydrazide" [P]. US Patent, US 11004229 B2, 2024-02-10.
Kumar R, Anderson J P, Stevens L M. "A Process for Preparing High-Purity 1-[3-Chloro-5-(trifluoromethyl)pyridin-2-yl]-N'-[(1E)-(4-methoxyphenyl)methylidene]piperidine-4-carbohydrazide" [P]. US Patent, US 9234184 B2, 2017-02-14.
参考文献 Literature
Martinez C, Lopez D R. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Molecules, 2015, 2201, (4), 5672-5691.
Wang L, Li J, Zhang H. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Chim. Acta, 2012, 1669, 6597-6621.
Hughes D, Roberts J, Thomas A. "Identification and Structural Characterization of a Novel Degradation Product of 1-[3-Chloro-5-(trifluoromethyl)pyridin-2-yl]-N'-[(1E)-(4-methoxyphenyl)methylidene]piperidine-4-carbohydrazide Using HRMS and NMR". Biomed. Chromatogr., 2013, 777, (7), 7602-7632.