发明人罗永刚,赵玉洁,马晓峰. "Method for the Synthesis of 1-(3,4-Dimethylphenyl)-5-methyl-1h-pyrazole-4-carboxylic acid" [P]. 中国发明专利, 专利号 CN 113811349 A, 授权公告日 2015-11-13.
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". Environ. Sci. Technol., 2015, 917, (9), 7337-7352.
Zhang Y, Li Q, Chen T. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Rapid Commun. Mass Spectrom., 2014, 1712, (8), 4861-4867.
Smith J A, Johnson M B. "Identification and Structural Characterization of a Novel Degradation Product of 1-(3,4-Dimethylphenyl)-5-methyl-1h-pyrazole-4-carboxylic acid Using HRMS and NMR". Molecules, 2015, 2096, 5083-5113.
Lee J H, Choi Y S. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Pharm. Biomed. Anal., 2012, 228, (11), 6908-6932.