1,4-Benzenedipropanoic acid, beta,beta'-dioxo-, diethyl ester 448960-16-5 93-94-7 Acetic acid, terephthaloyldi-, diethyl ester (8CI) Diethyl beta,beta'-dioxobenzene-1,4-dipropionate Diethyl terephthaloylbisacetate EINECS 202-289-0 NSC 50655 Terephthaloyldiacetic acid, diethyl ester