The core four-ring structure of ethisterone used for functionalization.
If you need to purchase chemical raw materials, submit your demand information to get the latest quotations.
5-azido-3-O-benzyl-5-deoxy-1,2-O-isopropylidene-α-D-xylofuranose
3-t-butyldiphenylsilyloxy-11β-(3-isopropoxypropyl)estra-1,3,5(10)-trien-17β-ol
