Synonyms: Benzene, [(1E)-3-methyl-1-buten-1-yl]-, 1-Butene, 3-methyl-1-phenyl-, (E)- (8CI); Benzene, (3-methyl-1-butenyl)-, (E)-; Benzene, [(1E)-3-methyl-1-butenyl]- (9CI); [(1E)-3-Methyl-1-buten-1-yl]benzene; (E)-1-(1-Methylethyl)-2-phenylethene; (E)-3-Methyl-1-phenyl-1-butene; trans-β-IsopropylstyreneDouble bond geometry as shown.