Cordycepin, or 3'-deoxyadenosine, is a acquired of the nucleoside adenosine, differing from the closing by the absence of thehydroxy accumulation in the 3' position of its ribose part. It was initially extracted from fungi of brand Cordyceps, but is now produced synthetically. Because cordycepin is agnate to adenosine, some enzymes cannot discriminate amid the two. Therefore, it can participate in assertive biochemical reactions (for example, be congenital into an RNA molecule, appropriately causing the abortive abortion of its synthesis). Cordycepin has displayed cytotoxicity adjoin some leukemic corpuscle curve in vitro, and at atomic one analytic balloon of cordycepin as a leukemia analysis is in progress.