发明人李文辉,何建平,钱学锋. "Method for the Synthesis of Methyl 3-hydroxy-5-nitrobenzofuran-2-carboxylate" [P]. 中国发明专利, 专利号 CN 109872118 B, 授权公告日 2018-09-06.
发明人张德明,刘建华,唐晓军. "A Process for Preparing High-Purity Methyl 3-hydroxy-5-nitrobenzofuran-2-carboxylate" [P]. 中国发明专利, 专利号 CN 112445787 B, 授权公告日 2015-11-21.
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