| Nitrogenous base | Nucleoside | Deoxynucleoside |
|---|---|---|
 Adenine |
 Adenosine A |
 Deoxyadenosine dA |
 Guanine |
 Guanosine G |
 Deoxyguanosine dG |
 Thymine |
 5-Methyluridine m5U |
 Thymidine dT |
 Uracil |
 Uridine U |
 Deoxyuridine dU |
 Cytosine |
 Cytidine C |
 Deoxycytidine dC |