Mueller T C, Rossi M, Nowak P. "一种的合成方法" [P]. European Patent, EP 3893643 A1, 2017-07-03.
Schröder R, Fischer A B, Johnson M A. "Method for the Synthesis of 2,9-Dimethyl-4,9-dihydro-3H-pyrido[3,4-b]indol-2-ium iodide" [P]. US Patent, US 10296852 B2, 2020-07-28.
发明人郭海燕,李文辉,高志强. "A Process for Preparing High-Purity 2,9-Dimethyl-4,9-dihydro-3H-pyrido[3,4-b]indol-2-ium iodide" [P]. 中国发明专利, 专利号 CN 109401293 A, 授权公告日 2020-07-07.
参考文献 Literature
Mueller T, Schmidt R K. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Biomed. Chromatogr., 2018, 1875, (2), 1012-1040.
Yamamoto K, Tanaka H, Suzuki T. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Sci. Total Environ., 2024, 1233, (9), 2898-2926.
Fischer P, Wagner E. "Identification and Structural Characterization of a Novel Degradation Product of 2,9-Dimethyl-4,9-dihydro-3H-pyrido[3,4-b]indol-2-ium iodide Using HRMS and NMR". Molecules, 2025, 2119, (9), 619-646.