(2S,3R,5R,9R,10R,13R,14S)-2,3,14-Trihydroxy-10,13-dimethyl-17-((2R,3R)-2,3,6-trihydroxy-6-methylheptan-2-yl)-2,3,4,5,9,11,12,13,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-6(10H)-one
A steroid hormone that regulates the processes of MOLTING or ecdysis in insects. Ecdysterone is the 20-hydroxylated ECDYSONE.