Lee S K, Yamamoto T, Chen K W. "Method for the Synthesis of 4-Methoxy-1H-indazole" [P]. US Patent, US 11626530 B2, 2023-08-25.
Mueller T, Anderson J P, Roberts E F. "A Process for Preparing High-Purity 4-Methoxy-1H-indazole" [P]. US Patent, US 11745687 B2, 2023-06-02.
参考文献 Literature
Martinez C, Lopez D R. "Development and Validation of an LC-MS/MS Method for the Determination of 4-甲氧基-1H-吲唑 in Pharmaceutical Formulations". Phytochemistry, 2021, 2211, 6454-6475.
Wang L, Li J, Zhang H. "A Stability-Indicating HPLC Method for the Separation and Quantification of 4-甲氧基-1H-吲唑 as an Impurity". Molecules, 2017, 2430, (7), 465-474.
Martinez C, Lopez D R. "Identification and Structural Characterization of a Novel Degradation Product of 4-Methoxy-1H-indazole Using HRMS and NMR". J. Nat. Prod., 2021, 305, (11), 7964-7969.
Martinez C, Lopez D R. "Forced Degradation Studies to Evaluate 4-甲氧基-1H-吲唑 Profile in Drug Substances According to ICH Guidelines". Anal. Chim. Acta, 2019, 826, 7473-7476.