(2E,4E)-Undeca-2,4-dienal (E,E)-2,4-Undecadien-1-al 2,4-Undecadienal, (2E,4E)- 2,4-Undecadienal, (E,E)- 2,4-trans,trans-Undecadienal 30361-29-6 EINECS 250-148-7 trans,trans-2,4-Undecadien-1-al