Klinger H, Stevens L M, Williams B T. "Method for the Synthesis of 1-Isopropyl-3,6-dimethyl-1h-pyrazolo[3,4-b]pyridine-4-carbohydrazide" [P]. US Patent, US 10213446 B2, 2016-12-14.
Thompson G K, Fischer A B, Chen K W. "A Process for Preparing High-Purity 1-Isopropyl-3,6-dimethyl-1h-pyrazolo[3,4-b]pyridine-4-carbohydrazide" [P]. US Patent, US 10544931 B2, 2022-04-14.
参考文献 Literature
Yamamoto K, Tanaka H, Suzuki T. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Anal. Chim. Acta, 2025, 438, 4159-4166.
Garcia M, Rodriguez P. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Molecules, 2021, 1111, 9015-9042.
O'Brien K, Kennedy M L. "Identification and Structural Characterization of a Novel Degradation Product of 1-Isopropyl-3,6-dimethyl-1h-pyrazolo[3,4-b]pyridine-4-carbohydrazide Using HRMS and NMR". Biomed. Chromatogr., 2018, 362, (3), 6500-6518.