(E,Z)-1,3,5-Undecatriene is a colorless liquid with a strong green, galbanum-like odor.
It occurs naturally in galbanum oil and is the odor-determining constituent
of the oil. The commercial qualities also contain some all-trans-isomer
and are offered only in dilution due to better stability.
Numerous synthetic routes for the production of 1,3,5-undecatrienes have been
developed.