Schröder R, Mueller T, Roberts E F. "一种的合成方法" [P]. US Patent, US 11181979 B2, 2018-06-19.
发明人徐明华,郭海燕,郑宇鹏. "Method for the Synthesis of 5,7-Diamino-[1,2,5]oxadiazolo[3,4-b]pyridine-6-carbonitrile" [P]. 中国发明专利, 专利号 CN 117251984 B, 授权公告日 2016-10-09.
发明人黄志刚,张德明,陈志强. "A Process for Preparing High-Purity 5,7-Diamino-[1,2,5]oxadiazolo[3,4-b]pyridine-6-carbonitrile" [P]. 中国发明专利, 专利号 CN 110247617 B, 授权公告日 2017-03-15.
参考文献 Literature
Kim S H, Park J Y. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Molecules, 2015, 1901, (1), 1569-1598.
Yang F, Sun W, Liu J. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Rapid Commun. Mass Spectrom., 2021, 447, 1537-1567.
Wang L, Li J, Zhang H. "Identification and Structural Characterization of a Novel Degradation Product of 5,7-Diamino-[1,2,5]oxadiazolo[3,4-b]pyridine-6-carbonitrile Using HRMS and NMR". Environ. Sci. Technol., 2016, 1057, (11), 2795-2811.
Zhang Y, Li Q, Chen T. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Nat. Prod., 2014, 1534, 9722-9727.