Purification and isolation of juvenile hormone and its action in lepidopteran larvae

Abstract : Conclusions: (1) The JH-active compound extracted from abdomina of adult male Cecropia is identical with the juvenile hormone produced by corpora allata. (2) The JHactive compound which we have isolated is the juvenile hormone. (3) Juvenile hormone is not farnesol, farnesal, farnesyl methyl ether, or any other compound previously tested for JH activity.