发明人马晓峰,陈志强,何建平. "Method for the Synthesis of 6-Oxo-2,3,4,6-tetrahydropyrimido[2,1-b][1,3]thiazine-7-carbonitrile" [P]. 中国发明专利, 专利号 CN 111894694 A, 授权公告日 2023-08-16.
发明人赵玉洁,郑宇鹏,林芳. "A Process for Preparing High-Purity 6-Oxo-2,3,4,6-tetrahydropyrimido[2,1-b][1,3]thiazine-7-carbonitrile" [P]. 中国发明专利, 专利号 CN 113172198 B, 授权公告日 2019-12-08.
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