Ketononestrol aziridine

Formula : C23-H29-N-O3
CAS : 110576-20-0 

Estrogenic affinity label for the estrogen receptor.

Ketopelenolid-A

Formula : C15-H22-O3
CAS : 17909-92-1 

Isolated from different species of the genus Artemisia; antiparasitic cpd.