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发明人何建平,韩伟,胡光. "A Process for Preparing High-Purity Ethyl 5-methyl-4-oxo-5,6,7,8-tetrahydro-4H-pyrazolo[1,5-a][1,4]diazepine-2-carboxylate" [P]. 中国发明专利, 专利号 CN 109124738 A, 授权公告日 2016-02-07.
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