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发明人郭海燕,钱学锋,罗永刚. "A Process for Preparing High-Purity Tert-butyl 6-cyano-1-methyl-1h,2h,3h,4h-pyrrolo[1,2-a]pyrazine-2-carboxylate" [P]. 中国发明专利, 专利号 CN 115701979 A, 授权公告日 2020-01-06.
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