Schröder R, Anderson J P, Roberts E F. "Method for the Synthesis of 2-[(E)-2-(Dimethylamino)ethenyl]-4-(4-heptylphenyl)-5-oxo-5H-indeno[1,2-b]pyridine-3-carbonitrile" [P]. US Patent, US 11317001 B2, 2024-02-10.
发明人郑宇鹏,李文辉,罗永刚. "A Process for Preparing High-Purity 2-[(E)-2-(Dimethylamino)ethenyl]-4-(4-heptylphenyl)-5-oxo-5H-indeno[1,2-b]pyridine-3-carbonitrile" [P]. 中国发明专利, 专利号 CN 108049286 A, 授权公告日 2015-10-08.
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