20-Hydroxyecdysone is often a By natural means developing ecdysteroid hormone which controls the ecdysis (moulting) and metamorphosis of arthropods. It's thus one of the most widespread moulting hormones in insects, crabs, etcetera. It is also a phytoecdysteroid produced by different vegetation, together with Cyanotis vaga, Ajuga turkestanica and R