(E)-4,4-Dimethyl-2-pentene (E)-4,4-Dimethylpent-2-ene 2-Pentene, 4,4-dimethyl-, (E)- (8CI)(9CI) 4,4-DIMETHYL-2-PENTENE (TRANS) 4,4-Dimethyl-trans-2-pentene 690-08-4 EINECS 211-714-9 NSC 74143