1,3-Pentanediol, 2,2,4-trimethyl-, bis(maleate) ester 1-Isopropyl-2,2-dimethylpropane-1,3-diyl maleate 2-Butenedioic acid (2Z)-, 2,2-dimethyl-1-(1-methylethyl)-1,3-propanediyl ester 71550-60-2 EINECS 275-611-0