Kumar R, Patel M V, Yamamoto T. "一种的合成方法" [P]. US Patent, US 9183384 B2, 2019-10-18.
Roberts E F, Stevens L M, Johnson M A. "Method for the Synthesis of 4,5-Dihydro[1,2,5]oxadiazolo[3,4-f]cinnolin-3-ium-3-olate" [P]. US Patent, US 11113835 B2, 2024-03-16.
发明人张德明,韩伟,黄志刚. "A Process for Preparing High-Purity 4,5-Dihydro[1,2,5]oxadiazolo[3,4-f]cinnolin-3-ium-3-olate" [P]. 中国发明专利, 专利号 CN 110994338 A, 授权公告日 2022-07-20.
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