O'Brien P Q, Mueller T, Johnson M A. "一种4-methoxy-7-nitro-1H-indazole的合成方法" [P]. US Patent, US 10403737 B2, 2022-04-15.
Williams B T, Thompson G K, Patel M V. "Method for the Synthesis of 4-methoxy-7-nitro-1H-indazole" [P]. US Patent, US 10252949 B2, 2023-07-21.
发明人徐明华,马晓峰,王建平. "A Process for Preparing High-Purity 4-methoxy-7-nitro-1H-indazole" [P]. 中国发明专利, 专利号 CN 110477175 A, 授权公告日 2019-12-14.
参考文献 Literature
O'Brien K, Kennedy M L. "Development and Validation of an LC-MS/MS Method for the Determination of 4-methoxy-7-nitro-1H-indazole in Pharmaceutical Formulations". Chemosphere, 2015, 2164, (9), 9154-9157.
Yang F, Sun W, Liu J. "A Stability-Indicating HPLC Method for the Separation and Quantification of 4-methoxy-7-nitro-1H-indazole as an Impurity". Rapid Commun. Mass Spectrom., 2015, 882, 4353-4382.
Smith J A, Johnson M B. "Identification and Structural Characterization of a Novel Degradation Product of 4-methoxy-7-nitro-1H-indazole Using HRMS and NMR". Talanta, 2014, 1037, (9), 288-318.