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发明人冯建国,张德明,唐晓军. "Method for the Synthesis of 7-Amino-5-oxo-4,5-dihydropyrazolo[1,5-a]pyrimidine-2-carboxylic acid" [P]. 中国发明专利, 专利号 CN 112377277 B, 授权公告日 2017-12-14.
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