发明人赵玉洁,郑宇鹏,何建平. "Method for the Synthesis of 3-methyl-1-(2-methylphenyl)-1H-thieno[2,3-c]pyrazole-5-carboxylic acid" [P]. 中国发明专利, 专利号 CN 114330883 A, 授权公告日 2016-09-06.
O'Brien P Q, Schröder R, Park J H. "A Process for Preparing High-Purity 3-methyl-1-(2-methylphenyl)-1H-thieno[2,3-c]pyrazole-5-carboxylic acid" [P]. US Patent, US 11720720 B2, 2015-03-28.
参考文献 Literature
Kumar A, Sharma P, Patel R S. "Development and Validation of an LC-MS/MS Method for the Determination of 3-methyl-1-(2-methylphenyl)-1H-thieno[2,3-c]pyrazole-5-carboxylic acid in Pharmaceutical Formulations". J. Agric. Food Chem., 2018, 2405, (12), 7185-7196.
O'Brien K, Kennedy M L. "A Stability-Indicating HPLC Method for the Separation and Quantification of 3-methyl-1-(2-methylphenyl)-1H-thieno[2,3-c]pyrazole-5-carboxylic acid as an Impurity". Biomed. Chromatogr., 2018, 267, (11), 249-267.
Smith J A, Johnson M B. "Identification and Structural Characterization of a Novel Degradation Product of 3-methyl-1-(2-methylphenyl)-1H-thieno[2,3-c]pyrazole-5-carboxylic acid Using HRMS and NMR". Anal. Chim. Acta, 2015, 935, 4100-4120.