Hughes D C, O'Brien P Q, Yamamoto T. "一种的合成方法" [P]. US Patent, US 10786226 B2, 2023-09-20.
Brown S R, Park J H, Williams B T. "Method for the Synthesis of Ethyl 5-methyl-1,2,3-oxadiazole-4-carboxylate" [P]. US Patent, US 9995632 B2, 2016-12-15.
Mueller T, Johnson M A, O'Brien P Q. "A Process for Preparing High-Purity Ethyl 5-methyl-1,2,3-oxadiazole-4-carboxylate" [P]. US Patent, US 10614158 B2, 2019-08-06.
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. Nat. Prod., 2020, 1019, 463-477.
Smith J A, Johnson M B. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Chim. Acta, 2014, 276, (9), 9492-9502.
Jensen P, Larsen A M, Olsen K. "Identification and Structural Characterization of a Novel Degradation Product of Ethyl 5-methyl-1,2,3-oxadiazole-4-carboxylate Using HRMS and NMR". Rapid Commun. Mass Spectrom., 2025, 2026, 8698-8727.
Chen X Y, Liu M, Zhao W Q. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Biomed. Chromatogr., 2016, 976, (7), 5984-5995.