13988-26-6 2,5,8-Benzotrioxacycloundecin-1,9-dione, 3,4,6,7-tetrahydro- 3,4,6,7-Tetrahydro-2,5,8-benzotrioxacycloundecin-1,9-dione BRN 1380048 Diethylene glycol bisphthalate EINECS 237-784-0 Phthalic acid, cyclic oxydiethylene ester