(2E,4E,6E)-2,4,6-Nonatrienal-13C2 is a labelled analogue of (2E,4E,6E)-2,4,6-Nonatrienal (N649540). (2E,4E,6E)-2,4,6-Nonatrienal is an unsaturated aldehyde that is a natural volatile constituent of aggregation pheromones produced by male flea beetles. (2E,4E,6E)-2,4,6-Nonatrienal is also found in licorice root, one of the widely used herbs for its