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发明人何建平,张德明,孙丽萍. "Method for the Synthesis of 2-Amino-7-methyl-5-oxo-4-(2-(trifluoromethyl)phenyl)-4H,5H-pyrano[4,3-b]pyran-3-carbonitrile" [P]. 中国发明专利, 专利号 CN 112671065 B, 授权公告日 2016-01-12.
发明人杨光,高志强,刘建华. "A Process for Preparing High-Purity 2-Amino-7-methyl-5-oxo-4-(2-(trifluoromethyl)phenyl)-4H,5H-pyrano[4,3-b]pyran-3-carbonitrile" [P]. 中国发明专利, 专利号 CN 113863826 A, 授权公告日 2017-12-09.
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