发明人林芳,罗永刚,赵玉洁. "Method for the Synthesis of (2-{Ethyl-[4-(4-nitro-phenylazo)-phenyl]-amino}-ethoxy)-acetic acid-4-nitro-phenyl ester" [P]. 中国发明专利, 专利号 CN 113159387 B, 授权公告日 2017-06-17.
发明人韩伟,张德明,何建平. "A Process for Preparing High-Purity (2-{Ethyl-[4-(4-nitro-phenylazo)-phenyl]-amino}-ethoxy)-acetic acid-4-nitro-phenyl ester" [P]. 中国发明专利, 专利号 CN 116853411 A, 授权公告日 2024-03-14.
参考文献 Literature
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