(E)-3-Methyl-2-(pent-2-enyl)cyclopent-2-en-1-one 2-Cyclopenten-1-one, 3-methyl-2-(2-pentenyl)-, (E)- 2-Cyclopenten-1-one, 3-methyl-2-(2E)-2-pentenyl- 3-Methyl-2-(2-pentenyl)-2-cyclopentene-1-one, (E)- 6261-18-3 EINECS 228-410-7