Nielsen H, Schröder R, Jørgensen K. "一种的合成方法" [P]. European Patent, EP 3992175 A1, 2024-09-08.
Johansson L, Björnsson E, Kowalski A. "Method for the Synthesis of 7,8-Dimethyl-1-azaspiro[4.4]Nonane hydrochloride" [P]. European Patent, EP 3475974 A1, 2021-03-12.
参考文献 Literature
Brown R C, Davis S M. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Chromatogr. A, 2013, 1290, 2232-2241.
Jensen P, Larsen A M, Olsen K. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Food Chem., 2018, 819, (6), 5752-5757.
Brown R C, Davis S M. "Identification and Structural Characterization of a Novel Degradation Product of 7,8-Dimethyl-1-azaspiro[4.4]Nonane hydrochloride Using HRMS and NMR". Talanta, 2018, 2094, 8572-8578.