发明人徐明华,郑宇鹏,张德明. "Method for the Synthesis of Methyl 4-oxo-5-(thiophen-2-ylmethyl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3-carboxylate" [P]. 中国发明专利, 专利号 CN 112796949 A, 授权公告日 2015-08-11.
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