trans,trans-2,4-Nonadienal-D4 is a labelled analogue of trans,trans-2,4-Nonadienal (N649315). (2E,4E)-2,4-Nonadienal; (E,E)-2,4-Nonadienal; (2E,4E)-2,4-Nonadienal; (2E,4E)-Nona-2,4-dienal; (2E,4E)-Nonadienal; (E,E)-2,4-Nonadien-1-al; trans-2,trans-4-Nonadienal