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发明人高志强,郭海燕,徐明华. "Method for the Synthesis of N1,N2-Bis(4-hydroxyphenyl)oxalamide" [P]. 中国发明专利, 专利号 CN 117097034 A, 授权公告日 2015-05-13.
发明人陈志强,何建平,周伟. "A Process for Preparing High-Purity N1,N2-Bis(4-hydroxyphenyl)oxalamide" [P]. 中国发明专利, 专利号 CN 109568911 B, 授权公告日 2024-11-02.
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