发明人郭海燕,钱学锋,马晓峰. "Method for the Synthesis of 5-Methyl-2H-thieno[2,3-d][1,3]oxazine-2,4(1H)-dione" [P]. 中国发明专利, 专利号 CN 111064428 A, 授权公告日 2016-11-27.
发明人陈志强,杨光,钱学锋. "A Process for Preparing High-Purity 5-Methyl-2H-thieno[2,3-d][1,3]oxazine-2,4(1H)-dione" [P]. 中国发明专利, 专利号 CN 109411645 B, 授权公告日 2019-12-27.
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