(3-Oxo-2-(2-pentenyl)-1-cyclopentyl)acetic acid methyl ester 39924-52-2 Cyclopentaneacetic acid, 3-oxo-2-(2-pentenyl)-, methyl ester EINECS 254-705-5 FEMA No. 3410 Methyl 3-oxo-2-(pent-2-enyl)cyclopentaneacetate Methyl epi-jasmonate