(E)-3-pentenoic acid, (E)-3-oxo-1-cyclopentene-1-acrylaldehyde, trans-3-Pentenoic Acid, 2-Propenal,3-(3-oxo-1-cyclopenten-1-yl)-,(E), (E)-pent-3-enoic acid, trans-3-(3-oxo-1-cyclopentenyl)-2-propenal, 3-Pentenoic acid, (E)-, 3-PENTENOIC ACID, (3E)-3-Pentenoic acid, (E)-3-(3-oxocyclopenten-1-yl)prop-2-enal, pent-3-enoic acid, (3E)-pent-3-enoic acid