Johansson L, Martínez F, Lefèvre J P. "一种的合成方法" [P]. European Patent, EP 3665525 A1, 2025-05-17.
Roberts E F, Fischer A B, Thompson G K. "Method for the Synthesis of 4-(4-Fluorobenzoyl)-8-methyl-1-oxa-4-azaspiro[4.5]decane-3-carboxylic acid" [P]. US Patent, US 9241589 B2, 2025-07-24.
Schröder R, Davis P L, Hughes D C. "A Process for Preparing High-Purity 4-(4-Fluorobenzoyl)-8-methyl-1-oxa-4-azaspiro[4.5]decane-3-carboxylic acid" [P]. US Patent, US 10644897 B2, 2021-04-20.
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". J. Chromatogr. A, 2014, 971, 5111-5131.
Wang L, Li J, Zhang H. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Chem., 2011, 1891, 3458-3475.
Chen X Y, Liu M, Zhao W Q. "Identification and Structural Characterization of a Novel Degradation Product of 4-(4-Fluorobenzoyl)-8-methyl-1-oxa-4-azaspiro[4.5]decane-3-carboxylic acid Using HRMS and NMR". J. Nat. Prod., 2012, 457, 7984-8013.
Smith J A, Johnson M B. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Chromatographia, 2024, 1425, 2403-2432.