Endvidere besidder clofarabin større modstandsevne over for cellulær nedbrydning af adenosin - deaminase og mindre modtagelighed for phosphorolytisk spaltning end andre aktive stoffer i denne klasse, mens clofarabintriphosphats affinitet til DNA- polymerase α and ribonukleotidreduktase svarer til eller overstiger affiniteten til deoxyadenosintriphosphat.
In addition, clofarabine possesses greater resistance to cellular degradation by adenosine deaminase and decreased susceptibility to phosphorolytic cleavage than other active substances in its class whilst the affinity of clofarabine triphosphate for DNA polymerase α and ribonucleotide reductase is similar to or greater than that of deoxyadenosine triphosphate.