Yamamoto T, Patel M V, Anderson J P. "一种的合成方法" [P]. US Patent, US 11876771 B2, 2021-05-27.
Nielsen H, Nowak P, Martínez F. "Method for the Synthesis of 2-Methyl-4,6-dihydro-2H-thieno[3,4-c]pyrazol-3-ol" [P]. European Patent, EP 3792101 A1, 2022-01-04.
Anderson J P, Klinger H, O'Brien P Q. "A Process for Preparing High-Purity 2-Methyl-4,6-dihydro-2H-thieno[3,4-c]pyrazol-3-ol" [P]. US Patent, US 9315874 B2, 2018-07-24.
参考文献 Literature
Martinez C, Lopez D R. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Agric. Food Chem., 2011, 447, (10), 6422-6450.
O'Brien K, Kennedy M L. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Biomed. Chromatogr., 2023, 1136, 866-887.
Jensen P, Larsen A M, Olsen K. "Identification and Structural Characterization of a Novel Degradation Product of 2-Methyl-4,6-dihydro-2H-thieno[3,4-c]pyrazol-3-ol Using HRMS and NMR". Molecules, 2018, 1932, 667-672.