发明人沈红梅,郭海燕,周伟. "Method for the Synthesis of 1216345-43-5
4-{4-[(Dimethylamino)methyl]anilino}-4-oxobut-2-enoic acid
DTXSID80700733" [P]. 中国发明专利, 专利号 CN 117021340 B, 授权公告日 2019-02-06.
发明人郭海燕,徐明华,钱学锋. "A Process for Preparing High-Purity 1216345-43-5
4-{4-[(Dimethylamino)methyl]anilino}-4-oxobut-2-enoic acid
DTXSID80700733" [P]. 中国发明专利, 专利号 CN 116053028 B, 授权公告日 2017-04-10.
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