发明人杨光,郑宇鹏,钱学锋. "Method for the Synthesis of Ethyl 5,6-diamino-2-(dimethylamino)pyrimidine-4-carboxylate" [P]. 中国发明专利, 专利号 CN 108016156 B, 授权公告日 2017-03-06.
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