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发明人冯建国,胡光,郭海燕. "A Process for Preparing High-Purity 7-Methyl-4-oxo-3,4-dihydropyrido[2,3-d]pyrimidine-6-carboxylic acid" [P]. 中国发明专利, 专利号 CN 116209135 A, 授权公告日 2016-07-08.
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