Iridomyrmecin is a defensive chemical, classified as an iridoid, isolated from ants of the genus Iridomyrmex. It has also evolved into a sex pheromone in wasps such as Leptopilina, with host species using the smell of iridomyrmecin as a way of detecting the presence of the parasitoid wasps.
The compounds of every Wikipedia article carrying a Chembox or a Drugbox, refreshed daily, with the values their infoboxes give. The pages need JavaScript; the API does not.