发明人张德明,何建平,杨光. "Method for the Synthesis of 3,6-Diamino-3aH-pyrazolo[3,4-b]pyrazine-5-carboxylic acid" [P]. 中国发明专利, 专利号 CN 115939933 B, 授权公告日 2022-06-08.
Mueller T C, Kowalski A, Rossi M. "A Process for Preparing High-Purity 3,6-Diamino-3aH-pyrazolo[3,4-b]pyrazine-5-carboxylic acid" [P]. European Patent, EP 3252296 A1, 2019-04-25.
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