发明人刘建华,陈志强,王建平. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 115658538 A, 授权公告日 2018-05-09.
发明人胡光,罗永刚,韩伟. "Method for the Synthesis of 5-(Butylthio)-1,3-dimethylpyrido[2,3-d]pyrimidine-2,4(1H,3H)-dione" [P]. 中国发明专利, 专利号 CN 116935047 B, 授权公告日 2016-10-21.
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