N6-Methyladenine (6-(Methylamino)Purine) is a modified purine commonly found in genomes of prokaryotes, protists, and plants. N6-methyladenine affects diverse DNA functions, including replication, repair, and expression.

3-Deazauridine (NSC-126849) is a structural analog of uridine that inhibits the biosynthesis of Cytidine-5'-Triphosphate by competitive inhibition of Cytidine Triphosphate synthetase which is considered to be the primary mode of action of this nucleoside analog.

Gemcitabine elaidate (CP-4126), is a lipophilic, unsaturated fatty acid ester derivative of gemcitabine (dFdC), an antimetabolite deoxynucleoside analogue, with potential antineoplastic activity. Upon hydrolysis intracellularly by esterases, the prodrug gemcitabine is converted into the active metabolites difluorodeoxycytidine di- and tri-phosphate (dFdCDP and dFdCTP) by deoxycytidine kinase. dFdCDP inhibits ribonucleotide reductase, thereby decreasing the deoxynucleotide pool available for DNA synthesis; dFdCTP is incorporated into DNA, resulting in DNA strand termination and apoptosis.

LY2334737 is an orally available prodrug of gemcitabine with antineoplastic activity.

Sapacitabine (CS682) is an orally available nucleoside analog precursor compound with potential anti-tumor activity for the study of acute myeloid leukemia.