Roberts E F, Klinger H, Fischer A B. "Method for the Synthesis of 2-(2-Fluoroethyl)-4,5,6,7-tetrahydro-2H-indazol-3-amine" [P]. US Patent, US 11090757 B2, 2024-12-10.
Hughes D C, Roberts E F, O'Brien P Q. "A Process for Preparing High-Purity 2-(2-Fluoroethyl)-4,5,6,7-tetrahydro-2H-indazol-3-amine" [P]. US Patent, US 9283919 B2, 2018-12-07.
参考文献 Literature
Zhou X P, Huang L, Wu G. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Molecules, 2014, 1992, (9), 8251-8264.
Martinez C, Lopez D R. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Methods, 2018, 235, 5686-5702.
Yamamoto K, Tanaka H, Suzuki T. "Identification and Structural Characterization of a Novel Degradation Product of 2-(2-Fluoroethyl)-4,5,6,7-tetrahydro-2H-indazol-3-amine Using HRMS and NMR". Phytochemistry, 2022, 891, 8988-8995.
Zhang Y, Li Q, Chen T. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Chemosphere, 2014, 778, 9850-9856.