1,4-Dicarboxymethoxybenzene 1,4-Phenylenedioxydiacetic acid 2,2'-(1,4-Phenylenebis(oxy))bisacetic acid 2245-53-6 Acetic acid, (p-phenylenedioxy)di- Acetic acid, 2,2'-(1,4-phenylenebis(oxy))bis- EINECS 218-834-0 Hydroquinone-O,O-diacetic acid NSC 163333