2,2'-((2-Acetyl-1,4-phenylene)bis(oxy))bisacetic acid diethyl ester 2,5-Bis(carbethoxymethoxy)acetophenone 87048-89-3 ACETIC ACID, 2,2'-((2-ACETYL-1,4-PHENYLENE)BIS(OXY))BIS-, DIETHYL ESTER BRN 4542954