发明人罗永刚,黄志刚,张德明. "Method for the Synthesis of 7-Methyl-5-oxo-3,5-dihydro-2H-oxazolo[3,2-a]pyridine-6-carbonitrile" [P]. 中国发明专利, 专利号 CN 109878710 B, 授权公告日 2017-06-25.
发明人张德明,钱学锋,高志强. "A Process for Preparing High-Purity 7-Methyl-5-oxo-3,5-dihydro-2H-oxazolo[3,2-a]pyridine-6-carbonitrile" [P]. 中国发明专利, 专利号 CN 108166114 A, 授权公告日 2020-10-02.
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