O'Brien P Q, Fischer A B, Chen K W. "一种的合成方法" [P]. US Patent, US 9358616 B2, 2022-12-13.
Fischer A B, Lee S K, Chen K W. "Method for the Synthesis of 4-Methyl-1-propylpyridin-1-ium bromide" [P]. US Patent, US 9398036 B2, 2018-06-18.
参考文献 Literature
Jensen P, Larsen A M, Olsen K. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Molecules, 2012, 2244, 4867-4896.
Kowalski T, Nowak Z. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Sci. Total Environ., 2023, 1356, (5), 8952-8959.
Zhang Y, Li Q, Chen T. "Identification and Structural Characterization of a Novel Degradation Product of 4-Methyl-1-propylpyridin-1-ium bromide Using HRMS and NMR". J. Chromatogr. A, 2020, 2090, (6), 9801-9830.
Jensen P, Larsen A M, Olsen K. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Anal. Methods, 2011, 2385, 5309-5337.