Thompson G K, Chen K W, Roberts E F. "Method for the Synthesis of 1-Oxo-1,2-dihydropyrrolo[1,2-a]pyrazine-7-carboxylic acid" [P]. US Patent, US 9888586 B2, 2015-07-13.
Mueller T C, Lefèvre J P, Rossi M. "A Process for Preparing High-Purity 1-Oxo-1,2-dihydropyrrolo[1,2-a]pyrazine-7-carboxylic acid" [P]. European Patent, EP 3128597 A1, 2017-02-14.
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". Phytochemistry, 2021, 1377, 9934-9958.
O'Brien K, Kennedy M L. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Talanta, 2017, 2303, (2), 661-687.
Jensen P, Larsen A M, Olsen K. "Identification and Structural Characterization of a Novel Degradation Product of 1-Oxo-1,2-dihydropyrrolo[1,2-a]pyrazine-7-carboxylic acid Using HRMS and NMR". J. Nat. Prod., 2018, 1751, (7), 9764-9788.
Yamamoto K, Tanaka H, Suzuki T. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Anal. Chim. Acta, 2018, 2419, (1), 6894-6909.