2,2'-(Biphenyl-4,4'-ylenedioxy)bis(2-methylpropionic acid) diethyl ester 99661-88-8 Estere etilico del 4,4'-bis-(alpha-carbossiisopropossi)bifenile [Italian] MG 6861 Propanoic acid, 2,2'-((1,1'-biphenyl)-4,4'-diylbis(oxy))bis(2-methyl-, diethyl ester Propionic acid, 2,2'-(biphenyl-4,4'-ylenedioxy)bis(2-methyl-, diethyl ester