发明人胡光,朱建伟,罗永刚. "Method for the Synthesis of 2-Amino-6-chloro-α-cyano-3-(ethoxycarbonyl)-4H-1-benzopyran-4-acetic Acid Ethyl Ester" [P]. 中国发明专利, 专利号 CN 112625791 B, 授权公告日 2017-08-02.
发明人胡光,韩伟,朱建伟. "A Process for Preparing High-Purity 2-Amino-6-chloro-α-cyano-3-(ethoxycarbonyl)-4H-1-benzopyran-4-acetic Acid Ethyl Ester" [P]. 中国发明专利, 专利号 CN 110150667 B, 授权公告日 2015-01-04.
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