Tags: Chemical Compound, Chemical Substance.
Gyrinal is an organic chemical compound – an unsaturated ketoaldehyde – with the formula C14H18O3 obtained from the whirligig beetle (the water boatman Gyrinus natator). It is a powerful antiseptic and fish and mammal toxin and thus used as a defensive compound. Typically the beetles contain approx. 80 microgram of the compound. The LD50 of the compound is approx. 45 mg/kg in mice.