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发明人徐明华,郭海燕,周伟. "A Process for Preparing High-Purity 7-Ethyl-6,7-dihydroimidazo[1,2-a]pyrazin-8(5H)-one" [P]. 中国发明专利, 专利号 CN 108604884 A, 授权公告日 2020-10-28.
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