发明人徐明华,钱学锋,高志强. "Method for the Synthesis of Ethyl 4-((3-amino-2-oxo-2H-chromen-4-yl)amino)benzoate" [P]. 中国发明专利, 专利号 CN 112132218 B, 授权公告日 2017-05-19.
发明人刘建华,高志强,韩伟. "A Process for Preparing High-Purity Ethyl 4-((3-amino-2-oxo-2H-chromen-4-yl)amino)benzoate" [P]. 中国发明专利, 专利号 CN 116378410 A, 授权公告日 2015-09-03.
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