NCIt definition : An antimetabolite and a chlorine derivative of the purine nucleoside adenosine, with
potential antineoplastic activity. Upon administration, 8-chloro-adenosine is phosphorylated
to form 8-chloro-adenosine triphosphate (8-chloro-ATP), which functions as a ribonucleoside
analogue and competes with ATP during transcription. Therefore, this agent causes
RNA synthesis inhibition, inhibits cellular proliferation, and induces apoptosis.;