heptacosadiene

== English == === Etymology === From hepta- +‎ -cosa- +‎ di- +‎ -ene. === Noun === heptacosadiene (plural heptacosadienes) (organic chemistry) Any of very many isomeric dialkenes having twenty-seven carbon atoms and two double bonds, but especially (Z,Z) 7,11-heptacosadiene which is a courtship pheromone in fruit flies ==== Related terms ==== heptacosane