(Z,Z)-4,4'-((Dioctylstannylene)bis(oxy))bis(4-oxo-2-butenoic acid) 15571-60-5 2-Butenoic acid, 4,4'-((dioctylstannylene)bis(oxy))bis(4-oxo-, (Z,Z)- 4,4'-((Dioctylstannylene)bis(oxy))bis(4-oxoisocrotonic)acid Diisobutylmaleate dioctyltin Dioctyltinbis(maleate) EINECS 239-625-0