发明人孙丽萍,黄志刚,罗永刚. "Method for the Synthesis of 5-(1h-Pyrazol-1-yl)pyrazine-2-carboxylic acid" [P]. 中国发明专利, 专利号 CN 116334172 A, 授权公告日 2015-06-03.
发明人张德明,林芳,陈志强. "A Process for Preparing High-Purity 5-(1h-Pyrazol-1-yl)pyrazine-2-carboxylic acid" [P]. 中国发明专利, 专利号 CN 115550402 B, 授权公告日 2018-03-09.
参考文献 Literature
Kowalski T, Nowak Z. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Nat. Prod., 2019, 1140, 8788-8812.
Kim S H, Park J Y. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Talanta, 2017, 687, (4), 3790-3817.
Lee J H, Choi Y S. "Identification and Structural Characterization of a Novel Degradation Product of 5-(1h-Pyrazol-1-yl)pyrazine-2-carboxylic acid Using HRMS and NMR". Sci. Total Environ., 2018, 92, 1367-1383.
Smith J A, Johnson M B. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Rapid Commun. Mass Spectrom., 2022, 2434, (8), 9398-9423.