Björnsson E, Rossi M, Jørgensen K. "一种的合成方法" [P]. European Patent, EP 3499939 A1, 2017-10-22.
Björnsson E, Kowalski A, Martínez F. "Method for the Synthesis of 3-(4-Methoxyphenyl)-1-methyl-1,4,7-triazaspiro[4.4]non-3-en-2-one" [P]. European Patent, EP 3280046 A1, 2021-02-05.
参考文献 Literature
Yamamoto K, Tanaka H, Suzuki T. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Sep. Sci., 2018, 290, (7), 1303-1324.
Kowalski T, Nowak Z. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Nat. Prod., 2022, 934, (11), 1139-1155.
Martinez C, Lopez D R. "Identification and Structural Characterization of a Novel Degradation Product of 3-(4-Methoxyphenyl)-1-methyl-1,4,7-triazaspiro[4.4]non-3-en-2-one Using HRMS and NMR". Talanta, 2012, 1382, (6), 9074-9101.
Yamamoto K, Tanaka H, Suzuki T. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Chromatogr. A, 2015, 1443, 5763-5770.