发明人赵玉洁,韩伟,张德明. "Method for the Synthesis of 4-(Dimethylcarbamoyl)-1-methyl-1H-pyrazole-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 111721374 B, 授权公告日 2022-01-02.
参考文献 Literature
Lee J H, Choi Y S. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Anal. Methods, 2024, 683, 699-702.
Kowalski T, Nowak Z. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Phytochemistry, 2018, 1555, (6), 6098-6111.
Xu M, Hu Y, Zhou D. "Identification and Structural Characterization of a Novel Degradation Product of 4-(Dimethylcarbamoyl)-1-methyl-1H-pyrazole-3-carboxylic acid Using HRMS and NMR". Environ. Sci. Technol., 2013, 220, (6), 450-473.
Fischer P, Wagner E. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Biomed. Chromatogr., 2019, 1732, (3), 3111-3119.