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发明人赵玉洁,胡光,杨光. "Method for the Synthesis of 2-Amino-7-methyl-5-oxo-4-phenyl-4H,5H-pyrano[4,3-b]pyran-3-carbonitrile" [P]. 中国发明专利, 专利号 CN 110002505 B, 授权公告日 2016-06-24.
发明人沈红梅,徐明华,唐晓军. "A Process for Preparing High-Purity 2-Amino-7-methyl-5-oxo-4-phenyl-4H,5H-pyrano[4,3-b]pyran-3-carbonitrile" [P]. 中国发明专利, 专利号 CN 112887367 A, 授权公告日 2017-05-22.
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