we employed radiolabeled precursor studies with prothoracic glands in vitro and a combination of analytical techniques ( nmr , cd , ms ) to demonstrate that the major ecdysteroid release from the glands is a mixture of 2-dehydroecdysone and 3-dehydroecdysone ( 1:2 ) , which is rapidly reduced to ecdysone in the presence of hpf .
C0058915
ecdysteroid
C0013494
ecdysone