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发明人林芳,孙丽萍,刘建华. "Method for the Synthesis of Methyl 6-((5-cyanopyrazin-2-yl)amino)-4-((1-methylpiperidin-4-yl)amino)nicotinate" [P]. 中国发明专利, 专利号 CN 110795617 A, 授权公告日 2017-01-27.
发明人罗永刚,孙丽萍,王建平. "A Process for Preparing High-Purity Methyl 6-((5-cyanopyrazin-2-yl)amino)-4-((1-methylpiperidin-4-yl)amino)nicotinate" [P]. 中国发明专利, 专利号 CN 115192064 B, 授权公告日 2017-11-09.
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