英文名称: | 1,2,4,5-benzenetetracarboxylic acid,1,4-diethylester,cpd. w,4'-[[1,1'- | 1,2,4,5-benzenetetracarboxylic acid, diethyl ester, compd. with 4,4'-[[1,1'-bip | henyl]-2,5-diylbis(oxy)]bis[benzenamine], reaction products with phthalic anhyd | 1,2,4,5-benzenetetracarboxylic acid, diethyl ester, |
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