发明人孙丽萍,唐晓军,周伟. "Method for the Synthesis of 4-oxoquinolizine-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 111186468 A, 授权公告日 2019-09-25.
发明人冯建国,朱建伟,徐明华. "A Process for Preparing High-Purity 4-oxoquinolizine-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 117453475 B, 授权公告日 2023-08-28.
参考文献 Literature
Yang F, Sun W, Liu J. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Nat. Prod., 2016, 2181, 5948-5952.
Hughes D, Roberts J, Thomas A. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Chem., 2014, 2450, (9), 3254-3271.
Zhou X P, Huang L, Wu G. "Identification and Structural Characterization of a Novel Degradation Product of 4-oxoquinolizine-3-carboxylic acid Using HRMS and NMR". Talanta, 2013, 1607, (8), 2693-2710.
Zhou X P, Huang L, Wu G. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Molecules, 2023, 1399, (2), 469-479.