3,3',4,4'-三苯双醚四甲酸二酐;4,4'-对苯二氧双邻苯二甲酸酐
HYDROQUINONE DIPHTHALIC ANHYDRIDE;HQDA;1,4-Bis(3,4-dicarboxyphenoxy)benzene dianhydride;1,4-Diphenoxybenzene-3',4',3'',4''-tetracarboxylic acid anhydride;4,4'-(4,1-Phenylenedioxy)bis[phthalic anhydride];4,4'-(p-Phenylenedioxy)bis[phthalic anhydride]
