发明人钱学锋,郑宇鹏,杨光. "Method for the Synthesis of 3-(Methylamino)-4-nitro-N-phenyl-1H-pyrazole-1-carboxamide" [P]. 中国发明专利, 专利号 CN 114571953 B, 授权公告日 2019-02-27.
发明人杨光,孙丽萍,朱建伟. "A Process for Preparing High-Purity 3-(Methylamino)-4-nitro-N-phenyl-1H-pyrazole-1-carboxamide" [P]. 中国发明专利, 专利号 CN 112176671 A, 授权公告日 2023-01-06.
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". Molecules, 2014, 259, (3), 8724-8753.
Yang F, Sun W, Liu J. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Pharm. Biomed. Anal., 2024, 685, 538-564.
Smith J A, Johnson M B. "Identification and Structural Characterization of a Novel Degradation Product of 3-(Methylamino)-4-nitro-N-phenyl-1H-pyrazole-1-carboxamide Using HRMS and NMR". Anal. Methods, 2012, 1540, (12), 2196-2201.
Kowalski T, Nowak Z. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Chromatogr. A, 2013, 1561, (8), 3934-3956.